Knipex Cobra XS water pump pliers: the smallest water pump pliers at a length of only 100 mm, for all environments. A small marvel: KNIPEX Cobra XS with a length of only 100 mm particularly compact design, ideal for working in the tightest of spaces thanks to its slim head. Small, useful and anything but a toy! The Cobra XS is a new, compact member of the KNIPEX Cobra family.