Manufactured to DIN ISO 8976 Specifications Manufactured from chrome vanadium electric steel Oil hardened and tempered Knipex Water Pump Aligator Pliers These professional quality Knipex Waterpump Pliers are manufactured from chrome vanadium electric steel, oil hardened and tempered with smoothly ground jaws, joint faces and an accurately formed box joint with safety stop. The parallelogram-shaped gripping surfaces have specially hardened teeth to 61HRC for positive grip on pipes and nuts. Plastic coated handles with slip guards for extra safety. Has 'no-nip' feature which prevents handles locking together and damaging users' hands. Features and Benefits: Manufactured to DIN ISO 8976 Specifications Manufactured from chrome vanadium electric steel Oil hardened and tempered Hardened teeth to 61HRC Plastic coated handles with slip guards 'No-Nip' feature that prevents handles locking together Technical Specification: Hold Nuts Across Flats - 36mm Hold Pipe Dia. - 42mm Length - 180mm