【Diamond Burrs】 High-quality, temperature-resistant diamond burrs for efficient and clean drilling. Filled with cooling wax and suitable for dry drilling, no preparation time required for additional cooling (like 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 has a circular design, which is commonly used in hand drills and angle grinders. 【Diameter】 The diamond drill hole opener has 7 different specifications, namely 5/6/8/10/12/14/16 mm, which can meet your different needs. 【High-quality material】 The gold-plated diamond tile drill bit is made of high-quality gold sand steel, with wear resistance, durability and long service life. The diamond dry drill bit is a practical tool in life with high hardness and sharpness. 【Versatile】 Professional diamond drill bits for drilling porcelain stoneware, glass, hard ceramic tiles and slabs, porcelain stoneware, marble,