Martinez Albainox Bullet Shaped Keychain Knife Zinc, Shiny 3Cr13MoV (18641)
- Bullet Zinc, Mirror 3Cr13MoV - a compact Martinez Albainox folding knife in the form of a pendant, with a cast zinc body and a drop point blade made of 3Cr13MoV steel with a mirror finish. Functionality and decorative EDC form.

This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Bullet Zinc, Mirror 3Cr13MoV is an unconventional EDC folder designed in the form of a cartridge-like key ring. Its compact size, lightweight design and striking appearance make this model ideal as a practical tool for simple everyday tasks - always available with your keys, bag or backpack. Thanks to its functionality and original design, it is a successful combination of decoration and useful accessory. The blade made of 3Cr13MoV stainless steel offers basic corrosion resistance, good ease of sharpening and satisfactory cutting quality for occasional use. The clip point profile provides cutting versatility, while the mirror finish gives the blade a striking shine and makes surface maintenance easy. The cast zinc (Zamak) body faithfully reproduces the silhouette of the cartridge, while maintaining an ergonomic shape for a secure grip despite its small size. A metal ring on a short chain allows for convenient attachment to a lanyard or keys, making the 18641 an ideal accessory for EDC enthusiasts looking to combine form, function and mobility in a single item.
3Cr13MoV is a martensitic chromium steel that has been enriched with molybdenum (Mo) and vanadium (V) to improve its performance properties. The typical chemical composition includes about 0.26-0.35% carbon (C), 12.5-14.5% chromium (Cr), 0.4-0.6% molybdenum (Mo) and 0.1-0.2% vanadium (V). The addition of chromium provides corrosion resistance, while molybdenum increases hardenability, high-temperature strength and resistance to pitting corrosion. Vanadium contributes to the hardness, wear resistance and fine grain structure of the steel. 3Cr13MoV is used for knives (often found in folding knives and hunting knives), medical tools and other applications where a good combination of corrosion resistance, hardness and strength is required. It is an improved version of 3Cr13 steel, offering better sharpness retention and overall durability.
Blade - with a clip point profile , which offers balanced cutting properties and good blade handling on a small scale. Thanks to its flat grind, the knife maintains precision even in small tasks such as cutting through packaging, string or tape. The 3Cr13MoV steel used provides resistance to corrosion, ease of sharpening and sufficient durability for light daily use. The blade was finished using the mirror finish method , which gives it an aesthetic shine and makes it easy to keep the blade clean, for example, by a quick wipe after use. The lack of a locking mechanism is in keeping with the minimalist nature of the knife and allows for intuitive unfolding and folding of the blade. In a compact keychain knife, such a solution provides a balance between safety and simplicity of design. Blade of the model 18641 fulfills basic utility functions, combining simplicity with a decorative finish.
Handle - made of a uniform cast Zamak alloy (zinc + aluminum + copper), which provides adequate rigidity, mechanical resistance and visual durability while maintaining low weight. The cylindrical shape inspired by the form of a cartridge gives the whole a collector's character and distinguishes the model from classic EDC keychains. Despite the lack of texturing, the Handle fits well in the hand thanks to its ergonomic profile and proper weight distribution. A metal ring on a short chain allows quick attachment to keys or a backpack, increasing the mobility and accessibility of the knife. With its minimalist but durable design, the 18641 combines aesthetic value with practical use - as a handy tool to carry with you at all times. This is a functional EDC gadget in an unusual form, responding to the needs of users looking for a combination of style and simplicity.
Technical data:
Product number: 18641
Product name: Bullet Zinc, Mirror 3Cr13MoV
Overall length: 72.0 mm / 2.83"
Blade length: 30.0 mm / 1.18"
Blade thickness: 1.8 mm / 0.07"
Handle length: 42.0 mm / 1.65"
Handle thickness: n.d.
Weight: 29.0 g / 1.02 oz
Blade material: 3Cr13MoV
Blade hardness: n.d.
Blade grind: Flat
Blade finish: Mirror
Handle material: Zamak
Handle finish color: Golden
Backspacer material: Zamak
Backspacer color: Golden
Clip: none
Clip material: n.d.
Pivot mechanism: n.d.
Locking mechanism: none
Opening method: Manual, nail nick
Additional accessories: key ring on chain
Designer: Martinez Albainox
Brand: Martinez Albainox
Manufacturer: Martinez Albainox S.L.U., Spain
Country of origin: Spain
Developed by: the Sharg® company