The knipex 87 02 cobra high tech water pump pliers are professional grade adjustable pliers designed for secure gripping of pipes and nuts in plumbing, heating and general maintenance work. Featuring 25 precise adjustment positions, these cobra pliers offer exceptional versatility through their push button adjustment mechanism, allowing quick and accurate sizing on the workpiece. The self locking gripping action ensures no slipping occurs during use whilst requiring minimal hand force, reducing operator fatigue during extended tasks. Special hardened teeth with a hardness rating of approximately 61 hrc deliver outstanding wear resistance and reliable grip retention. The robust box joint design provides superior stability through a double guide system, whilst the reliable hinge bolt catching mechanism prevents unintentional adjustment during operation. An integrated pinch guard protects fingers from being trapped, enhancing user safety. Suitable for gripping pipes up to 50mm diameter and nuts up to 46mm 2 inches, these water pump pliers are ideal for plumbers, heating engineers and maintenance professionals working with a wide range of pipe and fastener sizes. Features and benefits bull push button adjustment with 25 positions for precise sizing and comfortable handle width bull self locking gripping action prevents slipping and reduces required hand force bull hardened teeth 61 hrc provide excellent wear resistance and stable grip bull box joint design with double guide ensures maximum stability bull pinch guard protects operator's fingers during use bull reliable hinge bolt catching prevents unintentional position changes specifications adjustment positions 25 capacities for nuts Ø 2 in capacities for nuts 46 mm capacities for pipes diameter Ø 50 mm teeth hardness approx. 61 hrc