JALLERIA 35mm Diamond Hole Saw with Centering Guide Drill Bit, Professional Brazed Diamond Drill Bit for Tile, Porcelain, Glass, Marble and Ceramic

Professional Diamond Hole Saws: Diamond coated hole saw drill bit with vacuum brazing technology, ideal for drilling tiles, porcelain, glass, marble, ceramic, etc. Accurate Hole Drilling: With pilot center drill bit design, avoid slipping problem and make drilling holes on tiles easy and accurate. Durable: With vacuum brazing technology, the diamond adheres better and improves heat and corrosion resistance. wear, resulting in superior performance and longer tool life. Efficient: Thick and uniform diamond coating provides fast and effortless cutting. Large clearance hole on the side allows water to keep cooling and easily remove chips. Using Instructions: Keep the hole saws drilling vertically, when a round slot is drilled, you can remove the center drill and continue drilling. The recommended speed is about 500-800 RPM and using water can keep cooling for a long time.