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