BGTEC Dry Diamond Drill Bits 2pcs 6mm with Quick Change Hex Shank for Granite Marble Porcelain Tile Ceramic

Total 2 pieces dry diamond drill bits, diamond length 10mm ,Hex Shank Quick-fit. Dry drilling for Granite, Tile, Ceramic, Marble, Stone, Glass, Porcelain, Masonry. Use water for longer time. Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in which automatically absorb and dissipate heat as you go. Machine --Suitable for any electric drill,hand drill,Bench Drill, When use Angle Grinder,please install angle grinder drill chuck. Vacuum Brazed diamond technology provide very high efficiency,cuts faster and lasts longer. Diamond material upgraded, can drill 10-15 more holes than ordinary drill bits.