The IRWIN Vise-Grip Groovelock Pliers are designed with twice the groove positions of traditional groove joint pliers to deliver optimal hand and jaw positioning, providing a superior grip. The all-purpose jaw grips onto flat, round, hexagon and square workpieces to provide tremendous grip. The quick adjusting Press-n-Slide button quickly adjusts the lower jaw. The GrooveLock ProTouch series have grips which are designed for comfort and provide less hand fatigue. AntiPinch prevents the handles from pinching. The ViseGrip IRWIN VIS10507628 Groovelock Water Pump Pliers ProTouch Handle have the following specifications Capacity 56mm. Groove positions 16. Length 250mm (10 inch).