BB Spot Drill Bit CNC Hole Making Tool NC 60 90 120 Degree Short Drill 1mm-20mm Hard Steel Aluminum Coating BL2060 BC2055 Hole Diameter:6mm for carbon steel

for carbon steel

Large Chip Evacuation：Not Prone to Clogging

G Machine tap

采用优质整体硬质合金材料制成，显著提升硬度，并提供卓越的耐磨性，胜任苛刻的加工任务。

the screw shrinks without chipping

BB Spot Drill Bit CNC Hole Making Tool NC 60 90 120 Degree Short Drill 1mm-20mm Hard Steel Aluminum Coating BL2060 BC2055 Hole Diameter:6mm for carbon steelBB Spot Drill BL2060 BL2060 For iron, steel BC2055 For aluminum ,nonferrous metals Spot Hole Chamfering Completed in one Step Precision machine grinding, large core diameter design enhances rigidity and shock resistance, less likely to chip, smooth cutting, improves milling efficiency Center Drilling Hole + Chamfering Drilling Multiple Specifications and Materials Available BL2060 For iron, steel,Etc BC2055 For aluminum ,nonferrous metals,Etc For More