Description
Features
Metric - Black HSS Jobber Drill Set in ABS Plastic Case
- Bordo Black Knight M2 HSS Jobber Drills DIN338 And ANSI B94-11..
All About 118° Split Point (crankshaft point)
- The split point is self-centering and reduces the need for end thrust.
- Friction at the workpiece is reduced. 118° point angles are ideal for use in materials such as mild steel and cast iron.
- The 118° point creates easily controlled chips that are wide and thin.
All About Drill Bit Surface Treatment
- Black Finish Jobber Drills (also called blue finish) achieve 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 result is increased tool life. Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.
- Contents
1.5mm Black HSS Jobber 1
2mm Black HSS Jobber 1
2.5mm Black HSS Jobber 1
3mm Black HSS Jobber 1
3.5mm Black HSS Jobber 1
4mm Black HSS Jobber 1
4.5mm Black HSS Jobber 1
5mm Black HSS Jobber 1
5.5mm Black HSS Jobber 1
6mm Black HSS Jobber 1
6.5mm Black HSS Jobber 1
7mm Black HSS Jobber 1
7.5mm Black HSS Jobber 1
8mm Black HSS Jobber 1
8.5mm Black HSS Jobber 1
9mm Black HSS Jobber 1
9.5mm Black HSS Jobber 1
10mm Black HSS Jobber 1
10.5mm Black HSS Jobber 1
11mm Black HSS Jobber 1
11.5mm Black HSS Jobber 1
12mm Black HSS Jobber 1
12.5mm Black HSS Jobber 1
13mm Black HSS Jobber 1
