The RIDGID Chain Wrenches has a sturdy, cast-iron housing with an I-beam handle and a double jaw that gives fast, ratchet-like action in either direction. It is ideal for use in close quarters. The heavy-duty models have replaceable alloy steel jaws.RIDGID C-18 Heavy-Duty Chain Wrench Size: 450mm (18in).Rated Pipe Capacity: 60mm (2.1/2in).Actual O.D. Capacity: 125mm (5in).Chain Length: 500mm (20.1/4in).Weight: 2.7kg. Rated Pipe Capacity is the nominal diameter that can be correctly tightened.Actual O.D. Capacity is the actual O.D. that chain can accommodate.Additional Information:Length (mm): 450mmCapacity (mm): 125