3-Piece Diamond Drill Bit Set 6mm/8mm/10mm Vacuum Welded Drill Bits with M14 Thread for Dry Drilling in Porcelain, Tile, Granite, and Marble

Wide Applications: Diamond drill bits are perfect for dry drilling through porcelain tiles, ceramics, bathroom tiles, marble, granite, stone, masonry, and brick with ease. Using water can extend their lifespan. Superior Raw Material: Thanks to vacuum brazing technology, performance and lifespan are improved. The high-quality steel body helps it be more efficient and durable, not easily deformed. High Performance: The special spiral groove design at the top of the drill bit helps remove chips. The wax inside the drill bit helps with cooling and lubrication. Suitable Machine: M14 threaded angle grinder (direct connection) or hand drill, bench drill (with adapter). Size: 3 pieces, 6/8/10 mm, diamond height 10 mm, total length 60 mm, M14 thread tile drill bit.