20-65mm Triangle Shank Diamond Marble Granite Drill Bits Tile Quartz Hole Cutter Stone Hole Saw

20/25/28/32/35/38/40/43/45/50/60/65mm

1, three-sided shank design, shank diameter 10MM, clamping solid, drilling smooth and easy; 2, vacuum brazing technology precision manufacturing, improve product quality and life, cost-effective; 

3、Preferred 10MM high-quality diamond, combined with scientific ratios to build, high hardness and dense; 

4、Serrated special cutter head, greatly improving the sharpness and drilling speed, saw
teeth between a number of chip slots, in the drilling of dust can be quickly discharged, not easy to clog; 

5, drilling neat and sharp, fast, better finish;