Case XX 58413 three blade Medium Serpentine Stockman (6318 CV) with Pocket Worn Crandall Jig Gray Bone Handles. Chrome Vanadium Clip, Sheepfoot and Spey blades. 3 5/8" closed. USA NOTE: This knife has Chrome Vanadium High Carbon blades. While considered by many the superior Case XX blade steel, Chrome Vanadium is not Stainless. It will discolor, tarnish or rust. Keep the blades clean, dry and lightly oiled to help preserve the factory finish if you so choose.