5 Pcs Dry Drill Bit M10 Thread 10mm Tile Drill Bits Set for Ceramic Marble Stone

[Support Dry Drilling] The drill bit is equipped with cooling wax, which can be used for dry drilling directly without adding water to drill more holes, making it easy to use. [Premium Material] The drill bit is made of premium and filled with sand, doubling its length. The is treated with brazing and electroplating, with high wear proofing, providing sharply cutting, and fast drilling speed. [Easy to Use] Gently tilt at a 45 degree angle, prevent slipping, maintain a high speed to form a half moon shaped positioning . Then slowly straighten the electric drill and shake it while drilling, in order to discharge debris quicker and increase drilling speed. Item Type: Dry Drill Bit Material: Size: Approx. 10mm Celsius 0.39in