The Knipex water pump plier self locking on pipes and nuts no slipping on the work piece and low hand force required. It has 250 mm length.

Bi-material sheath - 46mm opening
9 adjustment positions
Good access to the workpiece thanks to the tapered head/hinge area
More performance and comfort than standard pliers of the same length: 9-position opening adjustment for 30% more gripping power
Self-locking on pipes and nuts: no slipping on the workpiece, less effort required
Specially hardened jaws with teeth on the inside, hardness approx. 61 HRC: secure Pliering thanks to high wear resistance
Interlocking hinge: high stability due to double guidance
Robust, dirt-resistant design
Ideal for outdoor work
Protective lug to prevent pinching
Chrome vanadium electrical steel, forged, oil-hardened in several stages

DIN ISO 8976