Made of precision ground hardened alloy steel, this punch set can power through 20 gauge sheet steel and 13 gauge aluminum and brass with ease. Accurate to within 0.002 in., this punch and die set includes a clear plate for easy alignment, nine punches, a 9-hole die and a custom storage case for easy organization and portability.Made from precision ground hardened alloy steelAccurate to within 0.002 in.Clear plate for easy alignmentCapacities: 20 gauge sheet steel, 13 gauge aluminum and brassSize(s):1/8 in., 3/16 in., 1/4 in., 5/16 in., 3/8 in., 7/16 in., 1/2 in., 5/8 in. and 3/4 in.Application: Steel, Aluminum, Brass