Bear Ops Bone Bold Action 5 Automatic Knife 4" Black Tanto. Blade Material : Sanvick 14C28N Handle Material : Black G10 and White Smooth Bone Rockwell : 58-60 Closed Length : 5" Edge : 3-5/8" Weight : 5.9 oz. Extras : Automatic, Pocket Clip provides for Tip Up Carry & Quick Access