Hex Step Drill, Sharp Titanium Coated Spiral High Speed Steel Drill Bit, Reaming Drill Bit

Set of 3: 4-32mm 15 rows (length 77mm), 4-20mm 9 rows (length 50mm), 4-12mm 9 rows (length 46mm) Made by Heise: The surface of the high hardness high speed steel (4241) is coated with titanium , making it stronger and sharper Wide application: drill holes for general household and workplace items, wood, vinyl, resin, etc Applicable scenario: house opening, vehicle repair The step drill is made from small holes to large holes, so you drill holes in various sizes and enlarge/modify the holes Compatible models: Electric drills, charging drills, impact drivers, etc. (Please use a charging drill with a voltage of 12 V or higher)

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