✅【Specification】Vacuum brazed diamond drilling bits with 5/8-11 thread. Diameter: 32mm. Diamond height: 10mm, Total length: 60mm. Drilling depth: 35mm. Diamond grit: #35/40. ✅【Application】Diamond core drill bits for dry or wet drilling Porcelain tile, Ceramic, Granite, Marble, Stone, Masonry, Brick and all similar materials. ✅【Vacuum Brazed】High-quality steel, combined with cutting-edge vacuum brazing technology, sharp and durable, long service life. ✅【Serrated cutterhead】Serrated cutterhead greatly improves the sharpness and drilling speed. Multiple chip removal grooves among them can quickly discharge dust when drilling, not easy to clogging. ✅【Machine】Suitable for angle grinders with 5/8-11 thread. For use with electric drills, an adaptor needs to be fitted. Recommended speed 6000RPM, maximum speed 11000RPM. HIGHDRIL Diamond Core Drill Bit - 1-1/4"(32mm) with 5/8-11 Thread Dry Drilling Hole Saw for Porcelain Tile Ceramic Granite Marble Stone Masonry Bric (Serrated Blade)k