Black Finish Jobber Drill Set Metric: 1.0 - 10.0 x 0.5mm Rises | 19pc
Black Finish Jobber Drills (also called blue finish) acheive their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating. This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding.
The 118° Split Point drills are self centering and ideal for use in materials such as mild steel and cast iron.
- Black Finish Jobber Drills
- Metric: 1.0 - 10.0 x 0.5mm Rises
- 19pc Set
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