Ridgid Aluminium Straight Pipe Wrench 450mm (18in)The RIDGID Aluminium Straight Pipe Wrench has the same strength and durability as other RIDGID heavy duty wrenches but are made from lightweight aluminium. These are nearly 40% lighter than the cast iron wrench of the same size. The jaws are identical to the RIDGID heavy duty wrenches. Specification: Size: 450mm (18in) Pipe capacity: 65mm (2. 1 2in)