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 112in Weight 09kg