The RIDGID Strap Wrenches are best for any polished pipe. They have a sturdy, cast-iron housing with an I-beam handle and a strong, woven nylon strap that gives a tight grip. Two models available with special strap for plastic pipe. RIDGID No.5P Strap Wrench has a strap designed for use with plastic pipe. Handle Length 450mm (18in). Strap Length 750mm (29.1/4in). Strap Width 45mm (1.3/4in). Rated Pipe Capacity 125mm (5in). Actual O.D. Capacity 135mm (5.1/2in). Weight 1.0kg. Rated Pipe Capacity is the nominal diameter that can be correctly tightened. Actual O.D. Capacity is the actual O.D. that strap can accommodate.