About MRF card

MRF multitool credit cards are innovative, multifunctional tools designed for those who value compactness and functionality. They contain dozens of useful tools in a format that can be easily stored in a wallet, making them suitable for use in everyday life as well as in extreme conditions. 

Supplementing and replacing classic multi-tools

MRF credit cards can be useful as a complement to classic multitools such as Leatherman, Victorinox or SOG, and can also replace them in certain cases. They are the perfect complement to full multitools by providing specialized features that may not be available in standard tools, such as string gauges, protractors, or drawing tools.

In situations where large pliers or knives are not required, MRF cards can be an alternative for simple tasks such as tightening screws, cutting rope, or opening packages. Thanks to their compact size, they are an excellent choice for those who want to minimize the weight of their gear while still maintaining access to the tools they need.

In this way, MRF cards offer a balance between portability and functionality, allowing you to be prepared for any challenge without the extra weight and bulk.

How do you choose the right MRF card?

MRF multi-tool credit cards are designed for a wide variety of user groups, taking into account their specific needs and tasks. They combine style and functionality, offering tools that not only simplify everyday tasks, but can also support in extreme conditions. We identify several key categories, each of which has its own series that perfectly meets its requirements.

The most advanced EDC cards for everyone. Multi-tool cards with 60+ and 80+ tools in 1

MRF Tools Universal 3.0 and 4.0 series cards are ideal for all EDC (Everyday Carry) enthusiasts, both professionals and amateurs. They will become reliable companions for:

  • mechanics and engineers who often need screwdrivers, wrenches of various sizes, nail guns and other tools;
  • tourists and extreme sportsmen who use a compass, sundial, and knife in the field;
  • military and service personnel who may need special functions, such as a rangefinder, tools for disassembling AK47 and AR15 assault rifles;
  • Civilian airline passengers, as the Universal 4.0 is designed without a blade, which allows it to pass TSA screening at airports;
  • hunters, fishermen, and cyclists who will find spoke wrenches, repair tools, and various additional components.

Features of Universal 3.0 and 4.0 cards

Each Universal card is equipped with basic functions for a wide range of everyday tasks and emergencies. Tools include:

  • Rulers (inch and metric), compass, protractor - for precise measurements.
  • Bottleopeners, canopeners, boxopeners - essential for everyday needs.
  • A variety of wrenches (wrenches, spoke wrenches) and a nail gun - ideal for repair work.
  • Special tools for the military, such as a rangefinder and a sundial, are preferred in the field.

Maximum capabilities and modularity
The Universal series is not only about functionality, but also about modularity. The cards can be supplemented with additional tool inserts that include additional knives, screwdrivers, wrenches and a comb. Thanks to a special handle, the Universal card can be converted into a fixed knife for more complex tasks.


Your all-purpose tool
Universal cards are designed for those who want maximum functionality in a compact format. They can be used as a standalone tool or as an addition to your EDC arsenal, providing reliable support in everyday life and in extreme conditions.

Designers, artists, engineers, students and schoolchildren

The Designer and Professional series are designed for creative and technical professionals. Their features include tools for precise measurements and auxiliary drawing, which are convenient to have at hand in a compact format:

  • Designer is a lightweight and stylish anodized aluminum card available in black, orange, blue, and red. They contain inch and metric rulers, compasses, and protractors.
  • Professional - made of Cerakote-coated stainless steel (black or dark green) or natural titanium, they also have additional tools for measuring drill diameters, metal sheet thickness, and opening boxes and bottles.

These cards are not only practical, but also stylish, making them a great choice for people who appreciate original design combined with functionality.

Fans of outdoors and camping, survival and extreme conditions. Preppers, bushcrafters, hikers and other adventurers

For those who prefer outdoor activities - fishermen, hunters, bushcrafters, hikers and other adventurers - we offer Adventure, Bushcrafter, Fisherman and Hunter series. Each of these series provides the necessary tools for specific tasks in the field:

  • Adventur - equipped with tools such as a small axe, tomahawk, arrow, spear, knife and sapper blade. There's also a sundial to help you navigate the outdoors. This is a multifunctional set for those who need maximum functionality for survival.
  • Bushcrafter - a distinctive feature is the ability to insert a fire starter to start a fire, a serrated blade to cut a spark from a magnesium rod, and special slots for winding fishing line or a fire cord.
  • Fisherman and Hunter - these cards are designed for survival with a focus on fishing and hunting. They include fishing hooks, jigs, and arrows, allowing you to use them for basic tasks in the woods or near water.

Cyclists, snowboarders, skiers, roller skaters, skateboarders and scooterists

Extreme card from MRF Tools is a universal multi-tool for those who live an extreme life and are always ready for unexpected challenges on the sports field or in nature. It will become indispensable for cyclists, snowboarders, skiers, rollerbladers and scooters who want to have a reliable and compact tool at hand for quick customization of their equipment.
Features of the Extreme card
The Extreme includes the maximum number of wrenches, screwdrivers (Phillips and Allen), spoke wrenches, and a bit holder with a lock for stability and reliability during work. This allows you to quickly and easily tighten or adjust sports equipment parts, even in the most extreme conditions.
Increased pressing force
The card is equipped with a special handle that allows you to increase the pressure force, providing a stronger and more accurate clamping. This is especially useful when you need to apply extra force to adjust parts.
Easy access for traveling

The Extreme card is designed without a blade, making it TSA compliant and easy to take with you on trips and flights.
The Extreme card is a stylish and highly functional accessory for those who are always on the go and want to have the maximum number of options for their gear at their fingertips.

Office Worker and Urban: multi-tools for the office and the city

The OfficeWorker and Urban cards from MRF Tools are compact multitools designed for those who value functionality in their daily lives and work. They are specially designed for office workers, frequent travelers, or those who face small but inconvenient tasks in the city. These cards have a useful toolkit that will help you quickly cope with any surprises.

OfficeWorker: A compact assistant for office work and business trips
The OfficeWorker card will become an indispensable tool for office work and business travel. Among its features:

  • Staple puller: Use the nail puller to easily remove staples from reports and documents.
  • Ruler and compass: Both inch and metric scales are available for drawing, sketching, or measuring.
  • Bottle and can opener: handy for snacks or coffee breaks.
  • Small sling cutter: Easily cut a string, sharpen a pencil, or even open a package quickly.

Urban: The card for city life
Urban is designed for situations that can happen in a dynamic urban environment. Its main tools are:

  • SIM card ejector: handy for quickly changing your mobile operator.
  • Buttons and needle: for quick clothing repairs - great if you need to sew a button or fix clothes on the go.
  • Disposable tweezers: A special system for quickly assembling disposable tweezers - useful for removing a splinter or other small nuisance.

Convenience when traveling
The OfficeWorker and Urban cards are TSA-compliant, so you can safely take them with you on trips and flights. They are ideal as a stylish and functional addition to an EDC kit, especially for those who are often in the city or on business trips.

Stylish accessory for bikers, bearded men, travelers, and women who need a compact comb at their fingertips

Lumberjack card from MRF Tools is designed for those who value style, convenience and functionality in their EDC set. It is a compact tool that combines functionalities for personal care with practical tools for everyday needs. Made of hardened steel or titanium, the Lumberjack is the perfect accessory for any situation.

Features and functionality:

The beard and hair comb is a great choice for men, especially for bikers with beards who always want to look well-groomed. The compact size allows you to carry it in your wallet and always have it at hand.

  • Screwdrivers and wrenches - indispensable for quick minor repairs, such as tightening screws or adjusting equipment.
  • Bottle opener - an additional convenience for opening drinks at any time.
  • Small blade - suitable for sharpening pencils, opening boxes and other small tasks.

Who it's for:
The Lumberjack is a stylish accessory ideal for bikers, bearded men, travelers, and women who need a compact comb at their fingertips. This card is a practical solution for grooming and small everyday tasks that is always with you in your wallet.

Description of the tools that are available in the MRF tool cards

MRF multitool cards are equipped with a variety of functions for measuring, drawing, cutting, opening packages, and working with small components. They also include specialized tools for survival, navigation, and fishing, as well as useful elements for repair and equipment adjustment. Thanks to their versatility and compactness, these cards are suitable for everyday tasks, workshop use, and field conditions, providing easy access to essential functions in any situation.

Tools for drawing and measuring

  • Ruler (inch and metric)

A simple, handy ruler for measuring in inches and centimeters, suitable for everyday tasks. Designers, engineers, and students can use it to create sketches or drawings, and hikers can use it to measure on a map. It is always with you, making it available at any time for quick measurements.

  • Compass (inch and metric)
    A compact compass that allows you to draw circles and arcs is useful for those who work with technical drawings or modeling. For example, an engineer can easily take measurements for a sketch, and a student can complete practical geometry assignments. A compass is always available, even if other drawing tools are left at home. Classic multitools usually do not have this feature, so the card is a valuable addition to them.

  • Protractor and precision protractor to 1/3 degree

A tool for measuring angles, useful for drawings and installation work. The protractor will help you determine the angle of inclination when working with shelves or architectural elements, and the precision protractor will come in handy for precise measurements when working with small mechanisms or modeling. In emergency situations, such as the construction of a temporary shelter, the protractor will help determine the optimal angles for structural stability. Thanks to its compactness in the card, the protractor is always at hand for precise measurements.

  • Precision ruler (0.5 mm, 1/32 inch)

An ideal tool for high-precision measurements, useful for jewelry work or electronics repair. Craftsmen working with microcircuits or small mechanisms can easily use this ruler for adjustments. The high precision of the ruler ensures maximum detail without additional tools.

Gauges and templates

  • Tire tread depth gauge
    A tool for monitoring the condition of tires that helps determine the level of tire wear before driving. This is important for drivers who travel frequently, allowing them to quickly assess whether their tires are safe for long journeys. In bad weather or before an important departure, this gauge ensures that you are ready to go.

  • Guitar string height gauge
    A special tool for fine-tuning your guitar, allowing you to adjust the string height for optimal sound. Useful for musicians on tour or rehearsing, it allows you to quickly set up your instrument. It is important in situations where sound quality matters and you don't have time for professional tuning.

  • Drill Diameter and Steel Sheet Thickness Meter. A tool for determining the diameter of drills or the thickness of metal sheets, useful in workshops or for home repairs. It saves time and increases accuracy, especially when working with metal or selecting a drill bit. When preparing or adjusting machinery, this gauge ensures optimal use of materials. It is useful for builders and engineers to assess the strength of a material. For example, when assembling structures, you can quickly check whether the steel thickness meets safety requirements.

  • Blade angle gauge
    Helps determine the angle of sharpening of knives, which is useful for those who frequently work with blades or knives. It helps maintain optimal sharpness, which is important for efficient tool use. Maintaining the right sharpening angle can ensure that your knife is as effective as possible in the field or at home.

Blades and cutting tools

  • Knife
    A compact blade for cutting ropes, fabrics, or food. For example, while hiking, you can cut food or prepare ropes for your tent. In emergency situations, such as first aid, the knife can help cut clothes or make a bandage. While classic multi-tools have knives, our card adds an extra layer of accessibility, especially when the main tool is not available.
  • Axe
    A miniature woodworking tool useful for collecting firewood or building a shelter. For example, you can quickly chop branches for a fire. In an emergency situation, when you need to quickly build a shelter, an ax will help you complete the task. This is an addition to the classic multi-tool, which usually does not have an ax function.
  • Cord cutter
    A tool for quickly cutting belts or slings, which can save lives in the event of an accident. It is used to cut seat belts or other restraints when quick access is important for release. Suitable for emergency situations where safety is a priority.
  • Serrated knife
    A serrated blade for efficiently cutting through fibrous materials such as ropes, straps, or lanyards. Useful in hiking or survival situations where a strong and reliable cut is required. In emergency situations, a paring knife can help cut through rough materials, providing quick access to the right items.

Box,Can, Bottle Openers

  • Bottle opener

A handy tool for opening bottles that will come in handy during picnics or outings. The bottle opener allows you to quickly open a drink without looking for an additional tool. This is a classic solution for situations when you need to take a break and refresh yourself with a drink.

  • Can opener

A compact tool for opening canned food, especially useful for hiking or survival situations. It provides quick access to food, which is convenient for camping or hiking when a regular can opener is not available. In emergency situations, when food is a resource for survival, this can opener will become indispensable.

  • Box opener

A blade for quickly opening packages or boxes, which is convenient for the office or home. It helps to open the package without damaging the contents, which is important for receiving goods or equipment. Whether at work or at home, the box opener provides easy and precise access to the contents.

Tools for survival

  • Shovel

Compact tool designed for essential digging tasks. Its minimalist design fits seamlessly into a credit card-sized format, making it easy to carry in a wallet or pocket. Ideal for quick jobs like loosening soil or clearing small areas, it can also be a lifesaver in emergencies or military situations, where digging a small hole or trench may be necessary.
Made from durable materials, this spade withstands harsh conditions, making it reliable for survival and camping needs.

  • Fire starter

Creates a spark to start a fire for heating or cooking. Useful for hiking or camping, especially in conditions where humidity does not allow the use of conventional lighters. In an emergency, the fire starter provides an opportunity to create a heat source or signal for help.

  • Sundial and compass

A primitive but reliable tool for determining time and direction, which is useful for tourists or survival in the wild. It will help you navigate when you don't have modern navigation tools. For example, you can plot a route or estimate the time until sunset. In emergency situations, when electronics fail, these tools become critical.

  • Distance ruler

Helps you estimate the distance to objects in nature or while traveling. It's useful when hunting, fishing, or navigating the terrain when you need to estimate the distance to an object or landmark. For example, you can determine whether your SOS signal will reach rescuers. The rangefinder will help you make informed decisions in the field, especially if it is important to stay at a safe distance or have an accurate estimate of the distance.

  • Latitude measurement by the North Star

A tool for astronomically determining your location by the North Star, useful when traveling in remote locations. For example, in the desert or at sea, this method will help you navigate without electronic devices. In an emergency, when all other navigation aids are unavailable, this method may be the only way to keep your direction.

  • Moon phase calendar

A useful tool for determining the phases of the moon, which is especially important for planning an overnight stay or fishing trip. For example, it will help you choose the best time for outdoor activities, taking into account the level of light and visibility at night. In the field, knowing the phases of the moon helps you better plan your actions in the dark.

  • Hooks and jigs for fishing

Allows you to use the card as an improvised fishing gear in survival conditions. This provides an opportunity to get food in the wild or during long hikes. In the absence of food supplies, these tools can become a source of life-sustaining food.

Tools for the workshop and equipment

  • Wrench set
    Useful for basic repair tasks, such as tightening nuts on a bike or vehicle. It allows you to make quick adjustments without having to carry heavy tools. Suitable for minor repairs and adjustments in the field.
  • Spoke wrench set
    Designed for adjusting the tension of the spokes on a bicycle, which is especially important during long journeys. For example, it is useful in case of wheel deformation when you need to quickly adjust the spoke tension. This helps to avoid more serious damage and keep you traveling.
  • Hex key set
    Used to work with screws with an internal hexagon, which is common in furniture and appliances. It will come in handy when adjusting parts or repairing sports equipment. It is suitable for quick and easy adjustments, providing the necessary flexibility in work.
  • Screwdrivers (flat and Phillips)
    These screwdrivers allow you to tighten and loosen screws for simple repairs at home or on the go. For example, you can use them to replace batteries in devices or repair household items. Their compact size makes them easy to use in normal situations, although the card-shaped access restrictions can be a challenge in hard-to-reach areas.
  • Bit driver with lock
    Universal bit holder for standard 1/4, 4 mm, 1/8 Leatherman bits, allowing you to quickly change bits for different applications. Convenient for a wide range of jobs with the ability to quickly change the bit for a specific screw. Suitable for a variety of tasks at home and provides flexibility when repairing appliances or furniture.
  • Nail puller and pry bar
    Help to remove nails and pry objects, which is useful when dismantling or repairing. For example, when disassembling old structures or opening a jammed door. In cases where you need to clear a path or gain access to hidden objects, the nail gun and crowbar provide convenient use.
  • Wire stripper and wire bending holes
    Ideal for removing insulation and working with electrical wiring, which is useful when installing lighting or repairing electrical wiring. It is used as a basic tool for wiring at home or in the field. It is suitable for setting up or making quick electrical repairs, providing the necessary flexibility in working with wires.
  • Tweezers
    A small but useful tool for removing small objects or for medical manipulations such as removing splinters. It provides convenience in first aid or working with small parts. The compact tweezers are convenient for use in the home and outdoors.

  • SIM card ejector tool
    Easily removes SIM cards, which is convenient for travelers or when changing operators. It is useful for quick access to the SIM card when you need to change it for communication. In case of an emergency, this tool allows you to quickly install a new SIM card to communicate with important contacts.

Weapon care tool

  • Scrapers and wrenches for AR15 and AK47 weapons
    Specialized tools for cleaning and maintaining weapons in the field, ensuring their performance. They help to quickly remove carbon deposits or adjust weapon parts. This is necessary for the reliable operation of the weapon in conditions where it is an important element of security.

Parameters of the MRF cards

Material and size

MRF cards are made of 440C hardened steel (hardness 45-55 HRC) or Grade 5 titanium (hardness 35-38 HRC), which ensures their strength and durability. The cards are 55x85 mm in size and 1.5 to 3 mm thick, which makes them easy to carry in a wallet.

Designer model made of 1.5 mm thick anodized aluminum.

Fisherman, Urban and Hunter made of 304 steel with a thickness of 0.8 mm.

Colors and coatings

MRF cards are available in different colors and coatings depending on the model. The Designer series cards are made of anodized aluminum and are available in black, blue, orange, red, and yellow, which gives them a stylish look and personality.
All other cards are made of natural brushed steel or brushed titanium, which emphasizes their durability and reliability.
In addition, steel cards can be coated with Cerakote to increase resistance to external influences. These models are available in black, dark green, or orange, allowing you to choose the option depending on your preferences.

Card extensions and accessories

MRF offers a variety of accessories and add-ons that make using multitool cards even more convenient and functional.
Among these accessories is a functional cardholder that allows you to store not only multitool cards but also regular credit cards. This ensures compactness and organization in everyday life.
Adventur, Universal 3 and Extreme cards can be equipped with functional handles, which increases their usability and adds new possibilities for performing various tasks.
Universal 3 and Universal 4 are also equipped with kits of inserts that extend the functionality of the cards, allowing users to adapt them to their needs and style. These inserts provide additional variability and enhance the user experience, making the cards even more versatile and personalized.

Cerakote paint

Cerakote TM is a special ceramic coating that is known for its high wear resistance and premium quality. This coating is widely used in the customization of weapons and expensive multi-tools due to its unique properties that provide high resistance to scratches, corrosion, and wear. Cerakote also adds not only increased durability to the tools, but also an aesthetic appearance with a choice of different colors.
MRF uses Cerakote coating for its steel cards, which increases their durability and protection against external influences. As a result, customers receive a premium product that combines functionality with a high level of protection and elegance.


MRF.tools was founded in 2015 and is a department of MRF.Engineering

We create credit card multitools and EDC keychains. Our mission is to provide premium gear to the modern explorer. We believe that your everyday gear should be functional and minimal. We're here to design quality products that will last you for a long time.

Since 2010  MRF.Engineering has been engaged in development of various plug-and-produce equipment (general mechanical engineering, automated systems, vending and automatic selling machines, etc.) Our team consists from skilled design engineers (mechanics, technologists, electronics engineers and electricians).