The knipex alligator water pump pliers with dipped pvc handles and a box joint design prevents slipping from the work piece the gripping surfaces have special hardened teeth to approx 61 hrc offering high wear resistance and stable gripping they are made from chrome vanadium electric steel that has been oil hardened they have a 9 notch adjustment positioning for 30 more gripping capacity the slim design of the head and joint area provide good access to the work piece and self locking o