PRECISE POSITIONING: Compared to traditional glass hole saws, our hole saws have positioning aids. The pilot drill in the center can help you position accurately, ensure that the drill will not slip or get stuck, and help you drill precise holes. CUTTING EFFECT: Diamond surface coating adopts sintering processing method. 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 create smooth, high-precision cuts with no broken edges for optimal cutting results. HIGH-QUALITY MATERIAL: Diamond hole saws are made of high carbon steel. Industrial grade high tensile carbon and the surface is nickel plated, which is effective against corrosion and rust. The diamond surface coating of the drill bit, the coating is thick and even, and the wear resistance and service life of the hole opener are improved. DIRECTIONAL DESIGN CHIPS: Our diamond drill bit's cutter head adopts a notch design with clearance holes on the side, which facilitates the entry of cooling water and ensures that the chips and other particles escape from the drill hole during operation, so that the hole can be drilled. The process is more convenient and efficient. WIDE APPLICATION: The diamond drill bit suitable for cordless drills, lithium drills and bench drills. Widely used for cutting precise holes in glass, ceramic, porcelain, tile, tile, limestone, slate, marble, pumice and fiberglass.