Durable power punch tool for punching accurate round holes through all types of materials. * From thin brass metal to plastic sheet through 16 gauge mild steel. * Package comes with seven quick-change, durable heat treated punch-and-die sets. * Sizes from 3/32, 1/8, 5/32, 3/16, 7/32, 1/4 and 9/32". Punch opens up to 1/4"; throat depth: 1-3/4" * Set completes with a durable plastic storage case