Suitable for drilling porcelain, marble, granite and travertine. Revolutionary new cooled wax design that requires no water Use a 2000-3000 RPM power drill Can be used with Tile Rite Universal Stainless Steel Guide with Suction Cup Hole size fits solid wall outlet red Features: The dry diamond drill bit uses vacuum brazing technology which allows the dry drill bit to be used at a higher temperature to cut diamonds easily. hard porcelain tiles, ceramics, marble and slate. The built-in lubricant aids cooling and prolongs life, which means there is no need for additional lubricant. Vacuum brazed diamond drill bits, granite and marble dry drilling, masonry , concrete, tile, ceramic, glass, hard plastic and so on. Built-in lubricant, helps cooling and prolongs life, which means there is no need for lubricant extra. Hexagonal shank, prevents slippage in chuck. Laser etched diameter on body for easy identification. Hole diameter: 6mm Head outer diameter: 6mm Head length: 32mm Overall length: 67 mm Diameter of the hexagonal shank: 10 mm Grit: 60 mm. Contents: 1 dry diamond drill bit (6 mm).