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Kubey Caiman KU421: 14C28N at 60-62 HRC Behind a Crossbar Lock

Maksim Epifantsev's 3.15-inch clip point on a 2.51-ounce G10 frame, with vacuum and cryogenic heat treatment and a $70 price.

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Published
2026-10-31 07:08:04
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The number that separates the Kubey Caiman from the pile of $70 crossbar folders is not the lock or the steel name. It is the 60-62 HRC range Kubey publishes for a 3.15-inch 14C28N blade, held there by vacuum and cryogenic treatment rather than a simple oil quench.

14C28N is a nitrogen-bearing Swedish stainless that most factories run soft, somewhere around 57-59 HRC, because soft steel grinds faster and chips less in shipping. Push it to 60-62 and the edge holds noticeably longer while the blade stays tough enough to shrug off a drop onto concrete. Maksim Epifantsev drew the Caiman, and the shape follows his usual line: a broad clip point, 1.14 inches wide at the belly, flat ground at 15 to 20 degrees per side.

Kubey Caiman KU421H folding knife with Tiffany Blue G10 handle

Hard numbers first

  • Blade: 3.15 inch (80 mm), 0.12 inch (3.1 mm) stock, clip point, satin finish, flat grind

  • Steel: 14C28N at 60-62 HRC, vacuum and cryogenic heat treatment

  • Frame: G10 scales over stainless liners, 0.51 inch thick, 4.17-inch handle, 7.32 inches overall

  • Weight: 2.51 ounces (77 g); lock: crossbar; carry: tip-up, left or right

What the crossbar does at this price

  • Ambidextrous by design. The bar sits across the tang, so the closing motion is identical in either hand and needs no finger in the blade path.

  • Phosphor bronze washers instead of bearings. Slower to break in, and less likely to collect grit that turns into a gritty pivot on a working knife.

  • Two omega springs carry the bar. They are the part that fails on any crossbar folder, and they are also the cheapest part to replace.

  • Stainless hardware throughout, sandblasted clip and pivot cap, no proprietary fasteners.

Four colorways, same $70

  • KU421G in black, KU421H in Tiffany Blue, KU421J in tan, KU421I in green.

  • Every variant lists at $70 with the same steel, the same dimensions and the same 2.51-ounce weight.

  • Tiffany Blue is the one that photographs best and sells out first; the green KU421I is already showing as unavailable on Kubey's own store.

Where the Caiman gives ground

  • No jimping on the spine behind the plunge line, so a choked-up grip relies on the blade's own width for purchase.

  • The 0.12-inch blade is a solid slicer but not a pry bar, and the flat grind leaves a shoulder that will wedge in dense cardboard.

  • At 2.51 ounces with a 4.17-inch handle, the Caiman is a light knife with a long grip. Hands smaller than a men's medium may find the tail hanging past the pinky.

Kubey Caiman KU421J with tan G10 handle and satin clip point blade

Anyone shopping for a hard-use work knife with a thick spine and a glass breaker should look elsewhere; the Caiman is a pocket cutter with a designer's name attached. Buyers who want a crossbar lock they can open and close without thinking, in a handle that disappears in a jeans pocket, are the ones this knife was drawn for.

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