Heat treated chrome vanadium alloy steel construction for superior strength. Patented high-leverage design gives up to 60% power gain. Special heat-treated steel spring holds jaws comfortably open. Tested to over 1,000,000 cycles. Co-moulded non-slip grips are 30% lighter than standard, for added comfort. Heat treated joint rivet for smooth and consistent operation. Induction hardened cutting edges for long life. Lock keeps pliers securely closed when not in use. Jaw Length - 1-9/16 in, Jaw Width - 1-9/32 in