Metric (7.5mm -13.0mm) HSS Black Knight Jobber Drill 5pk - Bulk (click for size options)
Save 52%
Original price
$67.10
Original price
$67.10
-
Original price
$310.10
Original price
$67.10
Current price
$32.18
$32.18
-
$148.88
Current price
$32.18
- Bordo Black Knight M2-HSS Twist Drills.
- DIN338
- 118º Split Point (crankshaft point)
- Split point is self centering and reduces the need for end thrust.
- Friction at workpiece is reduced.
- 118º point angles are ideal for use in materials such as mild steel and cast iron.
- The 118º point creates easily controlled chips which are wide and thin.
- Black Finish Twist 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.