LINKFIN and COiN are both tiny EDC knives, but they take different approaches: ACTMAX’s LINKFIN uses a sliding-link design with a reported 56.7 mm folded length, while Tiniest Gear’s COiN is a non-locking cutter about 25 mm across. LINKFIN’s creator lists light cutting tasks; COiN adds a bottle opener. Neither is a substitute for a full-size utility knife, and the available figures and COiN details come from secondary reporting rather than independent testing.
At a glance
| Feature | LINKFIN | COiN |
|---|---|---|
| Maker | ACTMAX | Tiniest Gear |
| Reported size | 56.7 mm (2.23 in) folded; 95.4 mm (3.75 in) extended | About 25 mm (one inch) across, roughly the size of a US quarter |
| Reported weight | 26.8 g (0.95 oz) | Not stated in the New Atlas report |
| Mechanism | Sliding-link design; New Atlas reports it cannot be deployed one-handed because of its small size | Two-part, non-locking design with a dimple clicker and ball-bearing tension to hold the blade open or closed |
| Materials | Titanium body and fixed D2 blade, according to New Atlas and ACTMAX’s campaign FAQ | Reported stainless-steel base model; an upgrade pairs a titanium body with a Damascus blade |
| Stated functions | Creator-listed light cutting, including packages, cardboard, and rope | Small blade use and bottle opening |
| Availability | Kickstarter campaign ended March 8, 2026; current retail stock and fulfillment are not established here | New Atlas reported planned August 2026 shipping; current availability and fulfillment are not established here |
Measurements, handling details, and COiN features in this comparison were reported by New Atlas; they are not independent test results. LINKFIN campaign terms and blade information come from ACTMAX’s Kickstarter campaign and FAQ.
How do their size and carry formats differ?
LINKFIN: a very short folding form
New Atlas reports LINKFIN at 56.7 mm (2.23 in) folded and 95.4 mm (3.75 in) extended, with a weight of 26.8 g (0.95 oz). Its titanium body and sliding-link format make it a compact object, but its reported folded length is still more than twice COiN’s approximate diameter. Optional tritium tubes were also reported; the source does not establish that they are included as standard.
COiN: coin-sized
New Atlas describes COiN as about 25 mm (one inch) across, approximately the diameter of a US quarter. It has a keychain hole, so its carry concept is closer to a small accessory than a conventional pocketknife. A coin-like footprint does not by itself establish comfort, accessibility, or legal suitability for carry.
#1 Best Overall
- CIVIVI MINI PRAXIS --- Constructed from black stonewashed D2 steel that perfectly blends edge retention, corrosion resistance, and ease of sharpening. This folding knife with the handy pocket clip is the ideal option for everyday carry that is legal in all states and will stay strong through all of your adventures.
- COMFORT GRIP --- We use G10 handle that is smooth to the touch, extremely durable and resistant to moisture and temperature changes. The comfortable handle provides a substantial grip while still being light and maneuverable in hand.
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How do the mechanisms handle?
LINKFIN slides open
LINKFIN’s sliding-link construction moves the blade between folded and extended positions. New Atlas reports that the tool cannot be opened one-handed because of its small size. The campaign FAQ calls the blade fixed and says it is not designed to be replaced; that description concerns the blade’s attachment, not a claim that it is a locking folding knife.
COiN uses tension rather than a lock
COiN is reported to use two parts, a dimple clicker, and ball-bearing tension to keep the blade in either its open or closed position. It is non-locking. The mechanism descriptions alone do not establish which knife is safer: safe handling depends on the design, the task, condition, and user technique, and no comparative safety testing is established.
Rank #2
- DIMENSIONS: 7.1 Inch (18 Cm) Overall Length With A Blade Length Of 3.1 Inches (7.9 Cm) And A Weight Of 3.5 Ounces
- DURABLE: Blade Is Made Of Reliable 7Cr17Mov Black Oxide High Carbon Stainless Steel With A Black, Aluminum Handle
- DEPENDABLE: Quick And Easy Access With The Convenient Pocket Clip, Finger Flipper And Ambidextrous Thumb Knobs Making It Ideal For Everyday Carry
- SECURE: Have Confidence That The Blade Will Not Slip With The Security Of The Liner Lock
- BE PREPARED: Knife Features Jimping And Serrations
What are the materials and maintenance trade-offs?
LINKFIN combines a reported titanium body with a D2 blade. ACTMAX’s Kickstarter FAQ says the blade can be sharpened but is not designed for replacement. That is a creator statement, not evidence of edge retention or long-term durability.
New Atlas reports COiN in a stainless-steel base configuration, with an upgrade that pairs a titanium body and Damascus blade. The report does not establish comparative sharpening needs, corrosion performance, edge retention, or serviceability for either model. The material names alone are not enough to decide which will perform better in a particular job.
The Tool Desk
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- Engineered for Endurance - The Tenacious Lightweight is built for long-lasting performance, featuring a full-flat-ground 8Cr13MoV stainless steel blade that offers exceptional edge retention and toughness, ideal for both everyday and tactical use.
- Secure, Tactical Grip - The fiberglass-reinforced nylon (FRN) handle features Spyderco’s signature Bi-Directional Texture pattern, providing a non-slip, secure grip, enhancing control during various cutting tasks, even in tough conditions.
- Versatile Cutting Performance - Whether you need precision slicing or heavy-duty cutting, the full-flat-ground blade is available in PlainEdge, CombinationEdge, or SpyderEdge options, allowing you to choose the right configuration for your tasks.
- Reliable Locking Power - The Tenacious Lightweight features Spyderco’s sturdy LinerLock mechanism, offering secure blade lock-up and smooth one-handed opening, ensuring safety and ease of use during all operations.
- Customizable Carry Options - Equipped with a four-position pocket clip, the Tenacious Lightweight offers versatile carry options, allowing for tip-up or tip-down carry, and accommodating both left- and right-handed users.
Which tasks are they intended to handle?
LINKFIN is described for light cutting
ACTMAX’s FAQ names opening packages, cutting cardboard, trimming rope, and small home or desk jobs as intended uses. These are creator-listed tasks, not results from an independent performance test. For sustained or demanding cutting, a larger utility knife with a replaceable blade is generally a more practical tool choice.
COiN adds a bottle opener
New Atlas reports that COiN can open bottles as well as provide limited blade use. Its miniature dimensions make it a niche convenience item rather than a general-purpose cutter. The source does not specify cutting capacity or provide test results.
Rank #4
- MISDIRECT POCKET KNIFE: Part of Kershaw's Everyday Starter Series, the Misdirect is a durable, easy-to-use assisted opening pocket knife with a reverse tanto blade and stainless steel handle.
- REVERSE TANTO PLAIN EDGE BLADE: Made from high-performance 4Cr14 blade steel, the 3" blade is highly durable, resharpens easily, and holds its edge. BlackWash finish helps to hide scratches and gives the blade a rugged, broken-in look.
- STAINLESS STEEL HANDLE: The sleek, bead-blasted stainless steel handle is both durable and comfortable. Pocketclip supports right- or left-handed tip-up carry, and right-handed tip-down carry.
- DESIGNED FOR SAFETY: This folding knife is equipped with assisted opening for quick, confident blade deployment. Frame lock secures the blade firmly in place while open.
- KERSHAW QUALITY: Since 1974, Kershaw has been committed to designing quality knives, built for those who take pride in what they carry. Misdirect measures 7" overall with a 3" blade and 3.2 oz weight.
What is known about campaigns, prices, and delivery?
ACTMAX’s LINKFIN Kickstarter campaign ran from February 6 to March 8, 2026. Kickstarter records HK$183,753 raised against a HK$20,000 goal, with 233 backers. Those are historical campaign results, not current sales, stock, or proof that backers received their rewards.
New Atlas reported early-backer COiN prices of £24 for the stainless-steel version and £39 for the titanium/Damascus version, with shipping planned for August 2026. These are historical reported campaign terms, not current prices or confirmed delivery. Current purchase availability and fulfillment for both knives are not established by the cited information.
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Best Value
- APPA POCKET KNIFE: The Kershaw Appa combines tactical style and strength with its all-black design and reverse tanto blade, making it the perfect lightweight tactical knife for a variety of everyday tasks.
- REVERSE TANTO PLAIN EDGE BLADE: The 2.75" blade is made from stainless steel that offers improved edge retention, strength and hardness. Black-oxide finish helps to hide scratches and gives the blade an industrial look.
- GLASS-FILLED NYLON HANDLE: The all-black, glass-filled nylon handle features added handle texture for a secure, comfortable hold. Includes a reversible pocketclip and integrated lanyard hole for versatile carry options.
- DESIGNED FOR SAFETY: Includes glass-filled nylon blade sheath for secure, protective storage that's ready when you need it. Attachable nylon straps allow for easy, diverse carry.
- KERSHAW QUALITY: Since 1974, Kershaw has been committed to designing quality knives, built for those who take pride in what they carry. Appa weighs just under 2 oz, and measures 6.5" overall, with a 2.75" blade.
Are tiny knives suitable for travel or everyday carry?
Size does not determine whether a blade is lawful to carry. Rules vary by location and can depend on blade design, intended use, and where it is carried; check the applicable local rules before carrying either knife. New Atlas says COiN’s creators noted that airline carry-on restrictions apply. Travelers should check current airline and airport security rules before packing any knife, rather than relying on its coin-sized form.
For construction work, neither product should be treated as a substitute for a job-appropriate utility knife. The available information describes LINKFIN as intended for light jobs and COiN as a tiny accessory cutter; it does not establish either as suitable for site work, heavy materials, or repeated cutting.
Is COiN the same as the Eclipse coin knife?
No. COiN is Tiniest Gear’s product; Horizon Knives’ Eclipse is a distinct, earlier coin-shaped knife. Kickstarter records the Eclipse campaign as running July 2 through August 26, 2018, raising $194,488 from 2,861 backers. Its campaign description specified a 440C hardened blade, titanium and G10 handle options, and a key loop. Those historical details are context only and should not be attributed to COiN.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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