Diamond Core Drill Bit – 110mm Tile Hole Saw Ceramic Drill Bit with M14 Thread for Porcelain Tile Granite Marble Masonry Brick. Size? Diameter 110mm; Diamond Height 10mm; Total length 60mm;Working length 35mm; Connection M14 thread;Diamond Grit #35/40. Application? Designed for dry drilling in porcelain stoneware, ceramics, natural stone tiles, marble, granite, tiles, hard floor tiles and so on. Wet using can prolong its life. Why choose us? The design of 4MM wide lightning tooth cutter head is conducive to the discharge of debris. In addition, high-quality and temperature-resistant diamonds ensure professionally clean and fast drilling. Vacuum brazing is the most effective and precise way of making diamond tools. It creates an unbreakable and extremely heat resistant segments. Feature? Vacuum Brazed Diamond TechnologyMore Heavy Duty and Wear Resistant than electroplated diamond bit, provide very high efficiency, cuts faster, durable and sturdy. High-quality base steel provides high-strength work support. Machine? Compatible with most angle grinder/driller, use the adapter to switch freely between the two machines. Material : Synthetic diamond and steel.