Representing the latest in water pump plier technology. Automatically adjusts to required size by using ONE HAND. Patented system allows for easier, faster, and safer work in confined areas without losing features of traditional water pump pliers. Designed and manufactured to outperform DIN specifications and ISO testing standards. Length 250mm (8in.). Jaw width 8mm. Jaw Opening 50mm. Jaw Depth 32mm. Material 50CrV. Tooth Hardness 51RC. Maximum pipe capacity 40mm. Maximum nut capacity 38mm. Weight 375g. 12 Adjustment positions. Read product review from Amazon Customer Reviews.