"Strong, long-lasting tool is designed for tightening and loosening pipe. Jaws are drop forged from alloy steel carefully milled and heat-treated. Tested for strength and wearability. Pipe capacity is milled in inches and millimeters into sides of jaw. Baked-on enamel finish. Handle is forged of alloy steel to provide stiffness without brittleness, and is grit-blasted and oil coated. Flat link chain is heat-treated and proof tested to 2/3 of its breaking strength. Limited lifetime warranty. U.S.A. Chain Length in. 40 1/2, Breaking Strength lbs. 22,000, Compatible Pipe Diameter in. 1 1/2 - 8, Tool Length in. 51. Single-end jaws Fits 1 1/2in.-8in. diameter pipe 51in.L tool 40 1/2in.L chain 22,000 lbs. breaking strain Limited lifetime warranty U.S.A."