DT DIATOOL Triangle Shank Diamond Drill Bits 6mm 3pcs with 20mm 1pc Chamfer Bit Vacuum Brazed Hole Saw for Porcelain Tile Ceramic Marble Granite Masonry Quartz

Specification: Triangle shank drill bit: Total length 65mm, diamond height 10mm. Work length 29-30mm. 6/8/10mm Grit #50/60. 4/5” hex shank diamond chamfer bit: total length 50mm, workable length 20mm,top angle 56 degree, grit #80. 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. Multi-use：drill bits for drilling and diamond chamfer bits for enlarging, polishing or shaping the holes of porcelain tile, ceramic, marble, quartz, granite, masonry, etc. Not recommend for drilling glass. Don’t directly use the chamfer bit to drill holes. 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.