Spyderco's new pocketknife.
Photo by Spyderco
Spyderco's collaboration with Darriel Caston produced the Squarehead Folder.

Spyderco has collaborated with Darriel Caston to create the Squarehead. Caston, an electrical engineer, has been making custom knives part-time since 1992.

The Squarehead is a compact pocketknife that does not miss on precision. This knife has a unique share-shaped sheepfoot blade made of CPM® S30V®powder metallurgy stainless steel. The blade has a Trademark Round Hole, which allows for a one- or two-handed opening with ease.

The single-sided, flat chisel grind offers great geometry and strength. It also allows for the PlainEdge cutting edge to lie against the handle scale safely. The Squarehead’s single-sided handle is made from titanium and comes in a stonewash finish. This one-piece construction comes with an integral black strap that can also be used as a blade stop and guard for its edge.

This lightweight pocketknife also includes a LinerLock-style mechanism that locks the blade in place when open. Although the Squarehead does not include a pocket clip, it is equipped with a wide slot in the handle made to easily attach to a chain, lanyard and more.


  • Length overall: 3.30″ (84 mm)
  • Length closed: 2″ (51 mm)
  • Blade thickness: 0.118″ (3.0 mm)
  • Blade length: 1.30″ (33 mm)
  • Cutting edge: 1.25″ (32mm)
  • Handle material: Titanium
  • Blade steel: CPM S30V
  • Weight: 1.1 oz (31 g)

The Squarehead pocketknife can be purchased at www.spyderco.com for $129.95.

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