Chamfering Drill Bit， 6pcs HSS Countersink Tap Drill Bit Set,

Tap Drill Bit Material : HSSWith multiple cutting edges, these cutting edges gradually cut threads during rotation and feed.Widely used for internal threading, drilling and reaming operations in a variety of metallic and non-metallic materials.Taps with a helical cutting edge allow tapping in blind holes. Helical flute taps are easy to use and help pull chips out of the target hole towards the tap shank and export chips in the opposite direction of tapping during use.Size : M3x0.5mm, M4x0.7mm, M5x0.8mm, M6x1.0mm, M8x1.25mm, M10x1.5mmPackage Content: 6pcs Tap Drill Bit

• Tools used to process internal threads, its main function is to cut threads in the hole, can tap blind holes or through holes. The tap shape is a spiral fluted tap.
• Thread size: M3, M4, M5, M6, M8, M10
• Drills, threads, deburs and countersinks holes in steel, copper, wood, plastic and aluminium.
• The drill is made of higher hardness high speed steel. It has strong rust resistance and the surface is coated to harden the surface.
• Perfect for wood openings, reams, chamfer, screw heads, etc; Suitable for soft metal, wood, rubber, plastic. Please do not use these chamfers on the high hardness metal material!