Large Hole Power Punch. This punch has the power to punch seven different large sized round holes in soft metal up to 1mm thick. The tool does all the work with a specially designed compound action and hardened steel cutting dies it punches with ease through the metal. Supplied in a hard sided case it comes complete with punches for 3/32, 1/8, 5/32, 3/16, 7/32, 1/4, and 9/32 inch. (2.4mm, 3.18mm, 4mm, 4.76mm, 5.5mm, 6.35mm, 7.14mm)