[NEVER USED] Diamond hole saw 68 mm, diamond drill bit with central guide drill, tile hole saw with diamond surface coating for cutting glass, tiles, ceramics, marble, limestone

Product never used, packaging damaged during transport. Unopened product, repackaged in our warehouses, in perfect working condition, warranty available.【PRECISE POSITIONING】: Compared to conventional glass hole saws, our hole saws feature positioning aids. The pilot drill in the center can help you achieve accurate positioning, ensure that the drill bit does not slip or jam, and help you drill precise holes. 【CUTTING EFFECT】: The diamond surface coating adopts the 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 ensure high-precision, smooth cuts without broken edges for optimal cutting results. 【HIGH-QUALITY MATERIAL】: The diamond hole saws are made of industrial-grade high-strength carbon steel. The surface is nickel-plated, which effectively prevents corrosion and rust. The diamond surface coating of the drill bit makes the coating thick and even, improving the wear resistance and service life of the hole opener. 【DELIMINATION DESIGN 【CHIPS】: The cutting head of our diamond drill bit features a notch design with through holes on the side, which facilitates the penetration of cooling water and ensures that chips and other particles are removed from the drilled hole during operation, allowing the hole to be drilled. The process is more convenient and efficient. 【WIDE APPLICATION】: The diamond drill bit is suitable for cordless drills, lithium-ion drills, and bench drills. It is widely used for cutting precise holes in glass, ceramics, porcelain, tiles, limestone, slate, marble, pumice, and fiberglass.