BOZONLI Diamond Hole Saw Drill Bits, Slate Porcelain Marble Hollow Core Bit for Glass, Ceramic, Porcelain, Tile, Marble, Granite (12mm Diameter)

Brazed Diamond drilling bits, hole saw core drill style bit. Drill diameter: 5 mm, 6 mm, 8 mm, 10 mm, 12mm, 14mm, 16mm, total length 65 mm each High-quality, temperature-resistant diamond grain for efficient and clean drilling. Inbuilt cooling wax and suitable for dry drilling. For longer tool life, the use of water or coolant is recommended Application: Glass, tiles and hard ceramic tiles, porcelain, granite marble, quartz, limestone, fiberglass, terrazzo, porcelain stoneware, masonry, sandstone