BGTEC Diamond Drill Bit Tile Hole Saw 28mm with M14 Thread for Porcelain Ceramic Granite Marble Masonry Stone Vacuum Brazed 60mm Length

【Size】（1pc）diameter 28mm; total length 60mm; diamond height 15mm; diamond grit #35/40; with M14 Thread. 【Application】Suitable for drilling granite and marble, tiles/ceramics and a variety of other materials; can be used for dry and wet drilling, with longer service life when used with water. 【Tip technology and High Quality】U-groove tooth shape adoption,fast removal,less chipping,less heat. Vacuum brazed diamond technology, stronger and more wear-resistant than galvanized diamond drill bits,offers very high efficiency. 【Not Easy to Chip】Precision diamond particles and vacuum brazing technology ensure that the drill bit is not easy to chip or damage during the drilling process, guaranteeing work safety and efficiency. 【Applicable machines】Applicable to angle grinders. Use the adapter can be used on hand drill. Can be used wet or dry.