40mm Diamond Hole Saw with Centering Guide Drill Bit, Tile Hole Saw with Diamond Coating, Diamond Core Drill Bit for Glass, Tile, Ceramic, Marble, Granite

Superior Quality: Our glass hole saw with a positioning pilot drill is made of high-quality diamond, with a solid hardened steel body and a nickel-plated surface, ensuring high hardness, rust resistance, corrosion resistance, sturdiness, and durability. Precise Positioning Pilot Design: Each tile hole saw is designed with a removable positioning pilot drill, and the pilot drill's cutting head is also diamond-coated, making it sharper and more durable. This effectively fixes the hole saw's drilling position for quick hole cutting. Sharp and Clean Holes: These diamond drill bits with a thicker diamond coating create a sharper groove edge, allowing for precise, flat-bottomed holes without chipping on smooth surfaces such as ceramic tiles, glass, marble, granite, and terrazzo. (Cutting depth up to 30 mm) Easy to Use: Operation is simple, requiring no special guide tools. Use the tile hole saw with the pilot drill to position the hole. Remove the pilot drill after positioning, then cut the hole directly with the tile hole saw. Note: During the cutting process, remember to add water or coolant to prolong the life of the hole saw.