Diamond drill bit 12mm for ceramics and glass Kranz KR-92-0004

Diamond drill bit 12 mm diameter is designed for working with porcelain stoneware, ceramics, and glass. It is a tubular drill bit made in the form of a hollow cylinder. Used in conjunction with drills or screwdrivers. The cylindrical shank ensures reliable fastening of the drill bit in the chuck. The cutting edge is coated with high-hardness industrial diamonds, providing precise and clean drilling of holes without cracks or chips on the material surface. To prevent overheating during the drilling process, diamond drill bits must be constantly cooled with water. In case of overheating, diamonds easily detach from the base, so drilling must be performed at low RPM.