BMayhew Pro 15050 18-Inch 150-Line Line-Up Punch ReviewbP PP Mayhew Pro 15050 18-Inch 150-Line Line-Up Punch PHigh-grade S-2 steel for superior tensile strength, toughness and long lifePFull shank heat treating and parabolic head to reduce mushrooming and chipping of struck endPProfessional black oxide finish for enhanced corrosion resistancePFull, unconditional lifetime warrantyPMade�in the�USAP