Sturdy ductile-iron housing and I-beam handle deliver maximum strength and leverage Features a full floating forged hook jaw that allows for superior gripping and quick adjustments Plumbing wrench has a non-stick adjustment nut and self-cleaning threads with replaceable hook jaw, heel jaw, and spring assembly Heavy-duty RIDGID pipe wrench complies with federal specifications GGG-W65IE, Type ll, Class A 6-inch (150 mm) pipe wrenches are ideal for pipe diameters of 1/8 inch (3 mm) to 1/2 inch (13 mm) with a pipe capacity of up to 3/4 inches (20 mm)