Steelex D3730 - 5 pc. Step Drill / Countersink Set

This TiN coated set includes a metric and fractional inch step drill and a 5 flute 3/8", 1/2" and 3/4", 82° countersink. The step drills bore perfect holes in sheet metal from 4mm to 12mm and 3/16" to 7/8" without the need to change bits. Both step drills have quick release hex shanks and laser etched markings. See-thru wooden storage box included.