HSS FULLY GROUND
1. Special Tip (split point) edges , high hardness
Smooth and sharp flutes better for drill hole
2.split point 135 degree
split point improves positioning accuracy 、reduce drilling resistance ,and longer service life
3.The drill bit is composed of body and the shank
Production Technics: Fully- ground drill
Surface Finishing: Bright finishing
Use for: metal 、wood、copper、iron etc.
Meterial: 6542# Hardness: 63°-65°
4.Chip Removal: the design of chip removal pull meterial away from the point and out from the hole.
Youjie Tools is one of the top level China Drill Bits manufacturers, and also a professional factory, welcome to wholesale cheap hss fully ground from our company.