50 Pcs Diamond Coated Drill Bit for 8 mm Diamond Pointed

Good Performance: Diamond dust coating offers superior performance and cutting strength. Diamond coating maximizes performance and retains a than carbide or bimetal hole saws No tremor phenomenon small incision resistance and fast hole speed easy chip evacuation ensuring you a experince when using diamond . Wide Application of The Tile : set for wet cutting tiles glass fish tanks granite ceramic porcelain bottles quartz sinks. 50 diamond coated core hole saws for kitchen bathroom shower faucets Color: Silver Material: Diamond How to Use Tile Drill Correctly: Use pen to start of hole and keep wet with water or coolant. Angle drill 45 degrees to start hole and being drilling at low speeds. Angle drill to vertical position the hole has started. Minimum pressure. Slow speed down for exit hole or drill from the other side to prevent breakthrough. Note: Electroplated diamond coating will wear off if the tool gets too hot. Never let your drill bit run dry. keep adding water when the diamond drill bits are working on the glass or . Package include: 50 x Diamond Coated Drill Bit Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.