Self gripping jaw design shaped to eliminate nut-burring. The guard prevents operators' fingers from being pinched. All made from chrome vanadium electric steel, oil hardened. Comes with an integrated spring in the handle. Polished heads with Cushioned Grips This 3 piece cobra plier set includes a 7" 10" and 12" cobra plier. All have self grip jaws, which allows it to be operated one handed. Patented parallel jaw design that grips a hex by four sides, not just two. Also it has a push button action-rapid, single-handed adjustment. Made with the quality and durability to last!