The Power Grip wrenches are designed for single handed operations. They are particularly useful when working in tight and confined spaces. The cam-action jaw mechanism is self-adjusting and increases the gripping pressure on the pipe as load is applied to the handle. The laminated steel construction provides strength and makes it lighter than traditional wrenches. Contoured ergonomic grip. The Power Grip® nut wrench is suitable for use on nuts from 10 mm to 24 mm.