7 PC HSS Center Drill Bits, M2 High Speed Steel, HRC 62, 1-1.6-2-2.5-3.15-4-5mm

Description

Professional industrial quality
Wearing Resistance, Heart Resistance
M2, Hight Speed Steel, Hardness HRC 62
Drilling accurate center holes, or starting holes for a larger sized drill bit

In the package:
1.0mm x 4mm x 31mm (Drill x Body x Length)
1.6mm x 4mm x 35mm
2.0mm x 5mm x 40mm
2.5mm x 6mm x 45mm
3.15mm x 8mm x 50mm
4mm x 10mm x 56mm
5mm x 12mm x 63mm