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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.
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