Draper Expert Tct Ceramic Drill Bit Set (5 Piece) | Dbcps1The Draper Ceramic Series are precise drill bits made from alloy steel with a reinforced carbide tip. The tungsten carbide tip is self centring and ultra tough for reliable cutting performance. Fitted with a non slip shank to prevent slippage (sizes 6mm and above). Suitable for drilling ceramics, soft tiles and non tempered glass. Designed for low speeds without the need of a cooling agent. Compatible with a standard 10 13mm chuck.