68mm Diamond Hole Saw with Diamond Surface Coating, for Cutting Glass, Tile, Ceramic, Marble, Limestone - Center Pilot Drill Bit

【PRECISE POSITIONING】: Compared to conventional glass hole saws, our hole saws have positioning aids. The pilot drill in the center can help you position accurately, ensure that the drill does not slip or jam, and help you drill precise holes.

【CUTTING EFFECT】: The diamond surface coating adopts sintering processing methods on . The cutting edge contains diamond particles from the inside out to ensure that the cutting edge is always sharp. Low cutting resistance and stable drilling produce smooth, high-precision cuts without broken edges for optimal cutting results.

【HIGH-QUALITY MATERIAL】The diamond hole saws are made of industrial-grade high-strength carbon steel, and the surface is nickel-plated, which is effective against corrosion and rust.The diamond surface coating of the drill, the coating is thick and uniform, and the wear resistance and service life of the hole opener are improved.

【CHIP REMOVAL DESIGN】: The cutting head of our diamond drill has a notch design with side through holes, which prevents the entry of cooling water makes it easier and ensures that chips and other particles come out of the hole crossing during operation, so that the hole can be drilled. The process is more convenient and efficient.

【WIDE APPLICATION】The diamond drill bit is suitable for cordless drills, lithium drills and bench drills. Widely used for cutting precise holes in glass, ceramic, porcelain, tile, limestone, slate, marble, pumice and fiberglass.