The Bahco ERGO™ Pipe Wrench is a multi-purpose pipe wrench black oxidised and anti-rust treated high-alloyed hardened special steel with precision induction hardened jaws Outer handle of hardened sheet metal with ergonomically designed soft warm-to-the touch high friction handle with a strong stable core Thermoplastic surface on tough polypropylene gives a superior grip Optimised design with narrower jaws gives perfect accessibility even in cramped corners Patented progressive teeth angled aggressively inwards fine at the inner part of the jaws and larger at the other part gives a better grip on all sizes of pipesThe inner handle with built-in protection against pinching and a safety stop for the adjusting nut Conforms to DIN 5234 standards