Gerber LMF II Survival Knife

Amazon.com Price: $66.50 (as of 26/10/2020 06:51 PST- Details)

Originally designed to free an aircrew from a downed aircraft
Tough enough to cut through the fuselage of an aircraft
Purposeful break between the tang and the butt cap, providing insulated protection against stray wires and absorbing any shock from hammering.