24-Inch Cast Iron Straight Pipe Wrench HEAVY DUTY One-piece housing with I-beam handle offers comfort and ease of use. The forged hook jaw, coil and flat spring combine for easy ratchet action. Heel and hook jaws are induction and flame hardened, then ground to a smooth surface. Maxpower parts are interchangeable with most well-known brands. Manufactured to meet government specification GGG-W-651-E and ANSI B-107