Diamond coated and designed for all types of tile including porcelain. No water required. Can be used directly onto any angle grinder (M14 thread) or any mains powered drill using M14 Chuck Adaptor 57587. 35mm Wax Filled Diamond Tile Drill. To Be Used On Porcelain, ceramic tiles & Hard Materials. No Water Required. To be used on Angle Grinder or Mains drill with Hex Adaptor. Part number 57587 on High Speed Mains Drill. The MEXCO Diamond Tile Drill Bit Range offers maximum performance and cost per cut when drilling the hardest of man-made and natural decorative materials. No water is required due to a special wax filled core melts, lubricates and cools when drilling. Supplied to fit M14 thread Angle Grinders although an M14 to Hex adaptor can be used with a High Speed Drill. Suitable for dry cutting.