【Diamond bit】High quality, temperature resistant diamond drill bits for efficient and clean drilling. Filled with cooling wax and suitable for dry drilling, no need to spend preparation time for additional cooling (such as wet drilling). 【Scientific Design】The scientific chip removal design makes the Dry Tile Drill more stable without making it dry and dusty. The shank of the diamond drill adopts a circular design widely used in hand drills and angle grinders. 【Diameter】Diamond Drill Bits Hole Opener has 7 different specifications, namely 5/6/8/10/12/14/16mm, which can meet your different needs. 【High Quality Material】The gold plated tile diamond drill bit is made of high quality gold sand steel, with wear resistance, durability and long service life. Diamond Dry Drill Bit is a practical tool in life, with hardness and sharpness. high. 【Multifunction】Professional diamond drill bits for drilling porcelain stoneware, glass, hard ceramic tiles and slabs, porcelain stoneware, granite marble, quartz, limestone, fiberglass, terrazzo, masonry, sandstone, etc. Thanks to extremely hard and well-sharpened diamonds, diamond drill bits guarantee professionally clean and fast drilling, tile drill bits have a speed of fast cutting. - Dry tile drill bits are brazed and can be easily used without adding water. Internal sealing wax, solid state condensation processing, more durable in use. - Due to the cooling wax in the core, the tile diamond drill bits are self-cooling and self-sharpening . -- Contains strong cooling wax, which can cool and lubricate the drill bit, which is not easy to burn, durable and wear-resistant, and can be wet and dry. Specification: Material: Diamond Color: Blue Size: 5/6/8/10/12/14/16mm Package: 7 x Diamond Drill Bits