Check the listing for details. 5pcs 1mm-5mm Center Drill Countersink Set 60° Angle Bits HSS Lathe Mill Press. Color: Silver, Condition: New. Listed at 10.45 USD. Features: 100% quality and Brand new. Material HSS Color :Silver Tone High Speed Steel Standard 60 degree included angle precision import double ended Specification: This listing is for a set of 5 HSS Center Drills It includes 1 each of sizes #1, #2, #3, #4 and #5 Each drill has a double end and is ground with a standard 60 degree included angle The set includes 1 each of the following sizes:#1 with 4mm body diameter & 1mm drill tip diameter#2 with 4mm body diameter & 1.5mm drill tip diameter#3 with 6mm body diameter & 2.5mm drill tip diameter#4 with 8mm body diameter & 3.15 drill tip diameter#5 with 12mm body diameter & 5mm drill tip diameter Usage: Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking Used for producing center holds in components or work pieces with require machining between centers Package Included: 1 set of 5 HSS Center Drills (U12080098001)