Due to manual shooting, there will be deviations between the actual object and the picture, but it will not affect the use effect.3pcs Vacuum Brazed Diamond drilling core bits for tile granite marbleSpecification:Hexagon Shank, diamond length 10mm, 10MM Diameter of tip,Available size: diameter6mm, 8mm,10mm6mm, total length 68mm;8mm-10mm,total length 80mm, Maximum drilling depth 30mm,Quantity:3pcs (Dia 6mm + 8mm + 10mm)Feature:Wax inside for cooling, Dry drillingfor drilling granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic.....Ensure all the forms of percussion or hammer action are turned off.Use a suction cup guide to enable an accurately positioned hole, Alternatively place the drill at a 45 degree angle. Drill until the drill bit starts to penetrate the material and then bring the drill up into the upright position and continue.the tip of the drill bit will become hot, please handle it with careApplying excessive pressure will not make the bit drill faster but will create excessive heat and subsecuently reduce the efficiency and life timeVery high efficiency, multi-purpose drillingLong life drillingNote:Please allow 1-3mm errors due to manual measurementItem color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same