Set of three conical drills for creating perfect holes in 5 different diameters (small cone) from 4mm to 12mm, 9 different diameters (medium cone) from 4mm to 20mm, and 15 different diameters (large cone) from 4mm to 32mm. They are made of titanium-coated HSS 4241 tool steel.

The titanium coating helps reduce friction and heating of the tools during use.

They are a standalone tool that does not require the use of a guide or any prep work. They are also suitable for a screw machine. They allow for easy hole opening in thin materials such as steel, stainless steel, wood, copper, aluminum, and plastic. For best results, the appropriate cutting lubricant should be used.

Hole diameters that can be achieved in mm:

• (small cone) 4, 6, 8, 10, 12
• (medium cone) 4, 6, 8, 10, 12, 14, 16, 18, 20
• (large cone) 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32