3pcs Dry Diamond Drill Bits for Ceramic Porcelain Granite Marble 12mm

3pc - 1/2inch (12mm) Dry diamond drill bits with hex shank.Application -- Diamond tip drill bits designed for porcelain, ceramic, granite, marble, masonry, concrete, various types of tile and stone.Performance -- Vacuum brazed diamond technology provides fast, chip free holes while maintaining a long life.Shank -- Quick change hex shank provides better chuck grip and fits different styles of drills.Self Cooling -- Diamond tipped drill bit are integrated with wax. The wax melts while drilling absorbing and dissipating heat allowing for Dry drilling (water may be added for longer life and harder stones).colour: redMaterial: diamondPackage Contents:3 x ceramic drill bitOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.