DT DIATOOL Diamond Drill Bit Kit 11pcs/set Vacuum Brazed Hole Saw with Triangle Shank 6/8/10/20/25/28/32/35/45/50/65mm Drilling Porcelain Tile Ceramic Marble Granite Masonry Quartz

Specification: Diameter 6/8/10mm: total length 65mm, diamond height 10mm. Work length 30mm. Grit #50/60. Diameter 20-65mm: total length 65mm, diamond height 10mm. Work length 29-30mm. Grit #40/45. Triangle Shank: Suitable for hand drill, bench drill. General hand drill speed is 2000RPM-5000RPM. Recommend high speed drilling. The higher the speed, the longer the work life. Don’t use the impact or hammer mode. U-Grooves Design: It helps chip removal and improve the working efficiency of hole drilling. Advanced Technology: Vacuum brazing processing technology, diamond are firmly embedded. The average service life is 3-5 times that of electroplated tools. Good Effect: #40 sharp diamond, less debris and edge breakage on materials and better finishing effect. Applicable material: porcelain tile, ceramic, marble, quartz, granite, masonry, etc. Not recommend for drilling glass.