Diamond core bits for porcelain stoneware with continuous crown 1.0 mm thick, 10 mm high with M 14 connection for dry drilling with an electric grinder. With the diamond core bit we can drill holes, drill ceramic tiles, dry or wet porcelain stoneware without chipping. To drill porcelain stoneware, we recommend starting the hole in an oblique position to prevent the hole from slipping on the surface. Once the seat has been created, position yourself vertically at 90 ° and continue drilling. Diamond core bits are available with a diameter of 6 mm. up to diameter 65 mm.