The RIDGID Heavy-Duty Raprench® Wrench has a deeper and broader hook jaw housing that provides a smooth, flat surface. This surface is ideal for occasional use as a hammer. Graduations on the hook jaw show approximated sizes of the opening for different pipe sizes and there is a knurled adjustment nut for easy one-handed operation. There is a large flange that prevents the nut from being inadvertently rotated when wrench is set down. It has a sturdy, cast-iron housing with a I-beam handle with full floating forged hook jaw. Specification Size: 250mm (10in). Capacity: 40mm (1.1/2in). Weight: 0.9kg.