Black oxidised and anti-rust treated high-alloyed, hardened special steel with precision induction hardened jaws Thermoplastic surface on tough polypropylene gives a superior grip Max jaw capacity: 45 mm Pipes up to: 1in Optimized design with narrower jaws gives better accessibility Anti-rust treated high-alloy steel with induction hardened teeth Patented progressive teeth for better grip, Weight: 1.4109584768 pounds, Manufacturer: Toolbank (First Order Account)