Diamond bits on glass are used to cut round smooth holes. The crown consists of a steel shell, one end - handle - fixed to the working part of the tool, and the other end - cutting cylindrical base. The edge of the product is covered with hard alloy cutting material - Diamond chips, which can be used with ceramics, glass and ceramic tiles. It is used for dry drilling and wet drilling, and the drill bit is installed on the drill bit and other drilling equipment.