Material:Ultra-microcrystalline cemented carbide outer (inner) cold bar,
Drill bit angle: 140°
Chip removal groove type, special design,
Blade diameter tolerance M7
Surface treatment Hcoating
Usage features:
Used for processing common materials such as structural steel/alloy steel/gray iron/ductile iron/stainless steel, etc., with strong centering ability, can be used for processing pre-made holes and interrupted holes, and is suitable for high-speed and large feeds