The Industry's first knockout set with a 6 Year Warranty. Rated for mild and stainless steel, iTOOLco SLICK-CUT™ technology allows 1/2 through 6 in punches and dies to cut through an industry leading 10 ga mild and stainless steel while maintaining the sharpness of the cutting edges. The gear Punch™ tool will work with any make or model of corded or cordless drill, new or old drills, with no special add-ons required. The punches and dies are clearly marked with trade standard conduit sizes as well as center Point™ marks for perfect alignment, no matter what direction you cut from. Lightweight and easy to use, the Gear Punch™ tool is compatible with other punch and die offerings and comes with a lifetime replacement on draw studs.