Tork Craft | Drill Bit Set 25Pc HSS Ground Bright Finish

Drill bits in the set
Ø1mm
Ø1,5mm
Ø2mm
Ø2,5mm
Ø3mm
Ø3,5mm
Ø4mm
Ø4,5mm
Ø5mm
Ø5,5mm
Ø6mm
Ø6,5mm
Ø7mm
Ø7,5mm
Ø8mm
Ø8,5mm
Ø9mm
Ø9,5mm
Ø10mm
Ø10,5mm
Ø11mm
Ø11,5mm
Ø12mm
Ø12,5mm
Ø13mm
Application
The drill bits are made from HSS (hi-speed steel) in a bright finish. The drill bits are fully precision ground at 135° with a split point. The drill bits can also be used to drill either
wood
or
metal
.
Sharpening
The drill bits are re-sharpenable several times. We recommend the following machines as it will sharpen 135° HSS  split point drill bits with ease:
Drill Doctor® 500X
– Diameter range of 2,4mm – 13mm (
19mm accessory available
)
Drill Doctor® 750X
– Diameter range of 2,4mm – 19mm
DAREX® V390
– Diameter range of 3-19mm
TIP:
When drilling hard metals, always use a coolant/lubricant. We recommend using
CT-90
.
Approximate Drilling Speeds in Metal
Diameter
RPM
1,0 -2,0mm
3500
2,5 – 3,5mm
2500 – 2000
4,0 – 5,0mm
1700 – 1400
5,5 – 6,0mm
1400 – 1100
6,5 – 8,0mm
1000 – 850
8,5 – 13,0mm
800 – 500