The new Zero Tolerance 0609 is a smaller, even more carry-ready version of the original Factory Custom 0606CF from ZT, RJ Martin, and Matt Martin. Like the original, it offers a clean, streamlined look yet also has highly detailed handle machining that adds both grip and visual impact. For even more visual “wow,” the 3D-machined handle is built of light-yet-strong titanium that ZT has anodized in an attractive bronze.

The 3.4-inch blade is CPM 20CV, which provides enhanced toughness and resistance to edge chipping. It also delivers superior hardness, corrosion resistance, and excellent edge retention. The drop-point blade has a two-tone finish: machined satin on the grinds with a stonewashed finish on the flats. The new 0609 opens manually with ZT’s KVT ball-bearing opening system and the handy flipper so it’s always ready when you want it.

Last—but certainly not least—you’ll notice the oversized See-Through Pivot (STP). Designed by RJ Martin, this unique pivot is hollow in the center, letting you “see through” it. The See-Through Pivot adds another intriguing touch to this already-attractive knife.

A new STP Tool enables you to adjust this unique pivot to your liking.

The new Kershaw Flythrough (model 1988) and the Zero Tolerance 0609 both feature RJ Martin’s unique “See-Through Pivot (STP).” This oversized pivot is hollow in the center, letting you “see through” it.

But a regular hex or torx tool won’t work to adjust it. To meet the need that just about every knife user has to tinker, Kershaw introduces the STPTOOL. It’s specifically designed to let you adjust the STP on the Kershaw Flythrough and the ZT 0609 so you can have things as loose or as tight as you prefer. Tinker away.

Download the STPTOOL Product Sheet (PDF)

  • Made in the USA
  • KVT ball-bearing opening system
  • Frame lock, hardened steel lockbar insert
  • Reversible clip (left/right, tip-up)
  • Steel: CPM 20CV, stonewashed & satin finish
  • Handle: Titanium, anodized bronze
  • Blade Length: 3.4 in. (8.6 cm)
  • Blade Thickness: 0.121 in. (0.307 cm)
  • Closed Length: 4.25 in. (10.8 cm)
  • Overall Length: 7.4 in. (19.1 cm)
  • Weight: 3.3 oz. (95 g)