Knipex 8702300 12-Inch Cobra Pliers - Comfort Grip Adjustment at the touch of a button directly on the workpiece Self-locking on pipes and nuts: no slipping on the workpiece and low handforce required. With comfort grip handles Gripping surfaces with special hardened teeth, teeth hardness approx. 61 HRC: low wear and reliable gripping Good access to the workpiece due to slim size in the head and joint area Reliable catching of the hinge bolt: no unintentional shifting