These irwin vise grip 10cr fast release locking pliers have a one handed triggerless release so they are twice as easy to open than the traditional design have a self energising lower jaw that allows for 3x more gripping power and have a 2x longer life as the high grade alloy steel is heat treated for maxium durabilty pro touch grips provide more control comfort and less hand fatigue hex key adjusting screw that tightens to draw materials closer together and also provides controlled release supp