Secures grip from pressing down on top handle - no need to squeeze the handles together - reducing user effort and strain. Unique jaw design shaped to eliminate nut-burring. Gripping teeth are specially hardened for a longer tool life . It has a guard that prevents the operators finger from being pinched. Polished head and plastic coated handles This 12" alligator pliers is self-gripping on pipes and nuts, that prevent slipping off the work piece. It has the working capacity of 1/8" to 2" in diameter. These are made with chrome vanadium electrical steel, oil hardened. Made with the strength and durability to last!.