1 fast drilling speed 2 high efficiency and less chipping 3 minimum material deformation 4 long life FeatureSharp, wear-resisting, polishing effect is good, stable quality, good diamond,Positioning hole,Cooling holeDescriptionDiameter: 5mm - 100mm.Total length: 70mm,75mm,90mm,95mmDig holes. 5000+ ---- 10000+Segment Height: 10mmWall Thickness: 0.8mm-1.2mmMarketGermany, Italy, India, Egypt, ...