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.
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.
in 1 offers
The lowest price for Bordo 9.4mm Black Knight M2 HSS Jobber Drill 2003-9.40 by Autoelec right now is $20.40 at Industrial Shed.
The all-time low was $4.76 on 17 Jan 2026 — today's price is 329% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 27 Apr 2026.
Bordo 9.4mm Black Knight M2 HSS Jobber Drill 2003-9.40 by Autoelec
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.
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.
Last updated at 27/04/2026 14:07:13
Bordo - 9.4mm Black HSS Jobber | 2003-9.40
Delivery between 28 Apr – 6 May $7.95
| Split Point | 118° |
| Diameter | 9.4 mm |
| Flute Length | 81 mm |
| Overall Length | 125 mm |
Bordo - 9.4mm Black HSS Jobber | 2003-9.40
Delivery between 28 Apr – 6 May $7.95
| Split Point | 118° |
| Diameter | 9.4 mm |
| Flute Length | 81 mm |
| Overall Length | 125 mm |
