Constructed from tempered, high carbon tool steel, this disc cutter set includes 2 different sizes of heart cutters: 25.25 x 31 mm and 31 x 38 mm. The cutting end of each punch is machined to a slight angle: a characteristic of all premium disc cutters. This angle greatly facilitates the shearing action of the punches. For use with soft metals 18 gauge (01 mm or .040") and thinner. Provided with a wood storage box and a urethane pad to cushion your disc cutter when striking.