FTVOGUE Diamond Drill Bit Hole Saw Cutter Bit Dry Punching Drill Bit Cutting Tool for Ceramic Glass Stone[8mm],Hole Saw

Specification: Item Type:Drill Bit Material:Diamond Total Length:65mm/2.6in Cutting Diameter:6mm / 0.24in  8mm / 0.31in  10mm / 0.39in 12mm / 0.47in  14mm / 0.55in(Optional) Effective Length:6mm / 0.24in  8mm / 0.31in  10mm / 0.39in 12mm / 0.47in  14mm / 0.55in Application Equipment:Angle grinder, hand drill Package List: 1 x Drill Bit Note: After punching out the positioning groove, slowly drill the electric drill and shake it while punching holes, which makes it easier to discharge the debris and increase the punching speed. It is forbidden to press the vertical hard top and press hard, otherwise it will greatly shorten the service life. 1. Install the drill bit on a hand drill or an angle grinder. 2. Tilting angle when positioning. After the groove appears, it will turn positive again. 3. The faster the hand drill speed, the more the number of holes, the high power hand drill is recommended. Do not use lithium drills, ordinary impact drills and low-speed hand drills. It is recommended to use more than 3000 speeds!