Features and Benefits:�High grade S-2 steel for superior tensile strength, toughness, and long life�Full shank heat treating and parabolic head to reduce mushrooming and chipping of struck end�Black oxide finish helps rust prevention�Full, unconditional lifetime warrantyHigh grade S-2 steel for superior tensile strength, toughness, and long life;Full shank heat treating and parabolic head to reduce mushrooming and chipping of struck end; Black oxide finish helps rust prevention; Full, unconditional lifetime warranty