Schrade Extreme Black Button Lock Knife Black Tanto. This pocket knife is a button lock knife that features It has a black 3 1/4”, hollow ground, 4116 stainless steel tanto blade, The handle is black-coated aluminum with ergonomic, scalloped finger grooves and has a large diameter glass-breaker tip. it has a tip-up carry pocket clip and it’s 7 4/5” in overall length