This Monument Heavy Duty Basin Wrench is used for fitting back nuts and union nuts, of pillar and bath taps behind basins, sinks and baths. Manufactured from strong malleable material, the 327R wrench has correctly machined jaws to fit standard nuts, 15 and 22mm. The offset design allows you to reach behind both sinks & baths easily. Capacity 1/2 and 3/4in BSP. Overall Length 260mm.