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.