BGTEC Dry Diamond Drill Bits Set Tile Bit 6/8/10/12/14mm with Quick Change Hex Shank for Granite Marble Porcelain Ceramic，5pcs

【✅Size】Total 5 pieces dry diamond drill bits (6/8/10/12/14mm) , Hex Shank Quick-fit.One set has a variety of specifications for drilling, to meet your multiple needs. 【✅Application】Dry drilling for Granite, Tile, Ceramic, Marble, Stone, 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. 【✅Vacuum Brazed technology】 Higher efficiency, faster working speed, longer service life. Diamond material upgraded, can drill 10-15 more holes than ordinary drill bits. 【✅Note】The cross hole opener is to provide accurate positioning for diamond bit, not recommended for drilling；Hand drill at 2000-5000RPM, the slower the shorter the life.