Made from cast iron the body and sliding jaw are aligned with two steel guide rods and the main screw for smooth action. ¥ Polypropylene jaws impart a soft yet firm grip. Under pressure these jaws deform around the work piece and return to their original shape when the work is removed. ¥ Jaw capacity can be doubled from 3.1/2 (90mm) to 7 (175mm) by removing the sliding jaw and placing it at the back of the body-making the vice reversible. ¥ With a 360¡ swivel base this is amongst the most versatile and convenient work holding tools. Jaw Width: 3-1/2 inch (90mm) Jaw Opening: 3-1/2 inch (90mm) Jaw Opening Reversed: 7 inch (175mm) Throat Depth: 1-1/2 inch (40mm) Pipe Jaw Capacity: 7/8 inch (22mm)