
Premium Quality Diamond Drill Bit Hollow Male 1/2bsp Connection for Wet Drilling Tile Ceramic Porcelain Granite Marble Slabs. Hot Pressed Sintered Diamond Rim: Ensures fast and smooth cutting on precision holes for ceramics and stone. Wet Cutting Design: Optimized for drilling tile, ceramic, porcelain, granite, and marble slabs. Male 1/2BSP Threaded Connection: Features go-through hollow holes for water feeding with special water connector chuck. Extended Diameter Range: Available sizes from 6mm to 152mm to suit various drilling needs. Customization Options: Full customization available from designs and samples for special requests. ISO9001:2015 Certified: Manufactured under strict quality management system with random inspection. Manufacturer Direct Supply: Direct from factory with 10 production lines and 12 years of export experience. Flexible Payment Terms: Accepts T/T, LC, D/P, PayPal, and Western Union for international orders.