Jumlee HSS Step Drill Bit 3 Pc Set

KD8.000

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step drill bit is a drill bit that has the tip ground down to a different diameter. The transition between this ground diameter and the original diameter is either straight, to form a counterbore, or angled, to form a countersink.

The 3 Sizes are – 4-12 mm , 4-20 mm , 4-32 mm