Ridgid 8" Iron Pipe Wrench with 1" Pipe Capacity features a sturdy cast iron housing, full floating hook jaw with spring suspension, replaceable jaws with tough, heat treated high-alloy steel jaw teeth, and extra strong mount for heel jaw. This pipe wrench is built to stand the test of time and is suitable for use on pipe diameters of 1/4 inch (6 mm) to 3/4 inch (20 mm) with a pipe capacity of up to 1 inch (25 mm).