Features: 

• Adjustment at the touch of a button directly on the workpiece.
• Fine adjustment for optimum adaptation to different size workpieces and a comfortable gripping position.
• Self-locking on pipes and nuts: no slipping off the workpiece and low hand force required.
• Gripping surfaces with special hardened teeth, teeth hardness (approx. 61 HRC): low wear and reliable gripping.
• Box-joint design: high stability because of double guide.
• Reliable catching of the hinge bolt: no unintentional shifting.
• Pinch guard prevents operators' fingers being pinched.
• 30 adjustment positions.
• Chrome vanadium electric steel; forged, multi-stage oil-hardened.

Details: 

Adjust workpieces effortlessly with the push of a button. Achieve precise fine tuning for different sizes and a secure grip. With self-locking, pipes and nuts can be held without slipping and with minimal hand force. Features a specially hardened teeth that provide a reliable, long-lasting grip (61 HRC). The double guide box-joint design ensures superior stability while the hinge bolt prevents unintended shifting. These pliers are made of durable chrome vanadium electric steel and have 30 adjustment positions for various tasks. KNIPEX 12" Cobra Water Pump Pliers.