Knipex cobra quick set hightech water pump pliers 250300mm knipex 87 22 250 these cobrareg water pump pliers from knipex combine all proven properties of the knipex cobrareg with an additional push on function making it easier to work in very confined and inaccessible areas adjustment directly on the workpiece is possible by simply sliding the pliers handle while the hinge bolt locks itself with the first workload the gripping width of the pliers is then fixed and can only be adj