Diamond drill bits for dry drilling. With M14 shank thread for mounting in angle grinder. For making holes in glaze, clinker, porcelain stoneware, granite, ceramic tiles, marble, etc. Smaller drills, up to 25 mm in diameter, should be cooled with water after each hole has been made. Larger drills do not require such cooling.
After turning on the grinder, apply the drill diagonally to the plate. When the drill sinks slightly, a small circular movement should be made with the tool. This movement is important so that the dust generated during work is moved away, lowering the temperature locally. When properly used, up to 35 holes can be made with a smaller drill, i.e. with a diameter of up to 25 mm, and up to 100 holes with a larger drill.