Black oxide and anti-rust treated high alloy steel provide long life and durability Precision induction hardened jaws are designed with inwardly angled aggressive teeth Outer part of jaw is large toothed and used for maximum grip on large diameter pipes Inner part of jaw is fine toothed International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Gripping capacity up to 127 mm (5") and a jaw opening up to 160 mm (6 1/3") Optimized design with narrower jaws gives better accessibility Patented progressive teeth for better grip, Weight: 5.7650881513 Pounds, Manufacturer: BAHCO