6 PCS Diamond Tile Drill Bit 5-12 mm, Universal Circular Handle

offers a set of tile diamond drill bits, consisting of 6 tile drill bits, including a 6 mm yellow cemented carbide bit (pre-drilled) and 5 mm tile drill bits, 1*6 mm, 1*8 mm, 1*10 mm, and 1*12 mm. NOTE: The yellow drill bit (pre-drilled) can only be used as an auxiliary tool for pre-drilling and should not be used for long periods, otherwise it will be damaged easily. To drill efficiently and beautifully, it is necessary to replace the blue bit after using the yellow drill bit in order to extend the life of the drill bits and improve efficiency. HOW TO USE: The procedure is to first install the yellow drill bit on the hand drill, tilting it at a 45 degree angle and rotating it quickly on the surface of the material. Then replace it with the appropriate size blue diamond drill bit and drill the material easily. It is recommended to add water during drilling to cool and extend the life of the bits. These drill bits are suitable for materials such as tile, glass, granite and marble and have a fast and long-lasting drilling effect. The blue diamond drill bit contains a cooling wax that, thanks to its wax structure, can absorb and dissipate heat automatically. The diamond tile drill bit features a circular handle and is suitable for many machines, such as hand drills, angle grinders, and bench drills.