Premium Bordo black high-speed steel (HSS) jobber drill bit set featuring 25 precision-ground bits ranging from 1 mm to 13 mm, supplied in a durable M3-standard storage case (SDM1 series).

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 mm Black HSS Jobber 1
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

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