3PCS Step Drill Bit Set Cone Cutting Drill for Plastic Wood Metal 4-12/20/32mm

Specification: Type: Step Drill Dit Material: High Speed Steel Shank: Triangle Coated ：Titanium Size: 4-12mm 4-6-8-10-12mm 5 Steps 4-20mm 4-6-8-10-12-14-16-18-20mm 9 Steps 4-32mm 4-6-8-10-12-14-16-18-20-22-24-26-28-30-32mm 15 Steps Package Including: 1Set Step Drill Bit.

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