Drill Bit Set 19Pc 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

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

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