68mm Diamond Hole Saw with Pilot Bit, Tooth Diamond Hole Saw Drill, Diamond Hole Saw for Tile, Glass, Porcelain, Granite Stone

Serrated diamond hole saw set is made of thick diamond coating, solid hardened steel body, and the surface is made by soldering process to ensure its hardness, anti-rust, anti-corrosion, strong and durable. The top of hollow hole saw adopts serrated cutting edge design to make it sharper. The multiple gaps between the cutting teeth not only reduce the cutting resistance, but also greatly improve the chip removal ability of the hole saw. Makes cutting and drilling faster and more accurate. Each tile hole saw is designed with a removable positioning pilot drill, the pilot drill bit is designed for accurate positioning and easy operation, allowing anyone to drill holes in granite or tile easily. Cutting diameter 68mm, cutting depth 9.5mm, shaft diameter 9.5mm, perfect for drilling tile, ceramic, glass, marble and granite. These multi tooth diamond drill bits with thicker diamond coating make the groove edge neater, can cut accurate flat bottom holes without chipping on smooth surfaces, such as ceramic tile, ceramic, glass, marble, granite and terrazzo.