From the virtually indestructible G-10 handle material to the ground finish of the Tru-Sharp surgical steel blades, these knives are as tough as they look. . W.R. Case Black G-10 Knives. Medium Stockman #6234. 10318 SS. Clip, Sheepfoot and Spey Blades. 3 5/8" closed. Weight: 2.5 oz.