Hardened alloy steel jaws are designed and manufactured to assure the longest possible blade life.Handles and grips designed to allow greater mechanical advantage for crisp, controlled cutting. Make powerful cuts with minimum effort. High-carbon machined steel jaws cut rods, bolts, rivets, bars, and chains. Tubular steel handles with angled grips allow maximum leverage. Turn 50 lbs. of hand pressure into 4000 lbs. of cutting pressure. Drop-forged jaws with center-cut blades.Tools are heat treated to provide increased wear resistance and longer blade life.