The Mini-Nibbler Cuts Metal Without DistortionDistortion free cuts Leverage action Hardened steel jaws Compound leverage action makes cutting much easier than with snips. Starts in the middle of a panel with a 1/4" hole. Jaws are made from hardened steel and are replaceable in seconds.Cutting Specifications18 gauge steel 22 gauge stainless .059" copper and brass .079" PVC .098" Polycarbonate