1The product is an quality tool fordrilling holes in tiles, glass, fish tanks, marble, granite countertop, ceramic, porcelain, ect. 2Our hole saws are taller than most other available products. You can drill through thicker materials with our tools with ease. 3These diamond drill bits are made of high quality material to resist corrosion. A thicken diamond coating on the tops offers superior cutting strength for maximum drilling outcomes. 4These glass hole saw set along the drill bit facilitate the entrance of cooling water and escape of chips and other particles from drilling, thus making the drilling process easier. 5Diamond hole saws are designed and constructed by unrivalled knowledge and expertise of brazing and coating edges and surfaces with the very hardest of materials
