Precise positioning : compared to the hole saw traditional glass, our hole saw has a positioning aid. A pilot drill in the center helps you to position accurately, ensures that the drill bit does not slip or get stuck and helps you to drill precise holes. cutting effect The diamond surface coating adopts sintering treatment. The cutting edge contains diamond particles from the inside out, which ensures that the cutting edge is always sharp. Low resistance to Cutting and stable drilling enable smooth, high-precision cutting without edge breakage for optimal cutting results. High quality materialThe diamond hole saw is made of carbon steel. high quality resistance industrial with a nickel-plated surface, which effectively prevents corrosion and rust. The diamond surface coating of the bit is thick and uniform, which improves resistance to corrosion. wear and life of the hole saw. Chip disposal design : our diamond drill bit adopts single-ended design; notch with side clearance holes, which is convenient for cooling water and ensures that chips and other particles escape from the hole during operation for drilling. The process is more convenient and efficient. Wide applicationThe diamond drillé 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.