COEWUR 20mm Diamond Hole Saw with Pilot Center Drill Bit, Diamond Core Hole Cutter for Tile, Porcelain, Glass, Ceramic, Marble

• Precise Drilling: The tile hole saw 20mm equipped with pilot hole drill bits for accurate positioning, effectively preventing deviation and slipping. It ensures high concentricity and low vibration, delivering precise, round, clean and smooth holes with a perfect finish.
• Durable Diamond Hole Saw: The ceramic tile hole cutter is made of high-strength carbon steel with firmly bonded diamond particles for smooth and effortless cutting. It provides outstanding wear resistance and maintains sharpness effectively to avoid rapid dulling or wear during use.
• Efficient: Porcelain hole saw side clearance holes enable fast and effective chip removal while supporting smooth water cooling flow. This reduces heat and friction, keeping the pilot drill bits in stable and reliable working condition.
• Porcelain Hole Cutter Set: The set includes 1 x diamond hole cutter 20mm, 1 x hex key, 2 x tile drill bits and 1 x spring. All accessories fit standard electric drills and are ready for immediate use in DIY and installation projects.
• Wide Application: Ideal for water supply pipe installation, drain pipes, electrical wiring, towel racks and light fixture mounting. Suitable for tile, porcelain, ceramic, marble, granite, glass and other hard materials.

Product Description Our 20mm diamond hole saw with hole drill bit is designed for stable, efficient and clean drilling on a variety of hard surfaces. Constructed with high-strength carbon steel and firmly bonded diamond particles, it offers reliable cutting performance, strong wear resistance and extended service life. It is widely used for plumbing, electrical work, towel bar installation, light fixture mounting and other home or professional projects. Specification Material: High-strength carbon steel + diamond particles Size: 20mm Shank: Compatible with standard electric drills Features: Center positioning, large chip removal holes, wear-resistant, stable cutting Application: Tile, porcelain, ceramic, marble, granite, glass Package Includes 1 x 20mm diamond hole saw 1 x hex key 2 x drill bit 1 x spring Notes Please use water as coolant during drilling to avoid overheating and extend service life. Keep the drill bit vertical for straight and accurate holes. Recommended drilling speed: 500–800 RPM. Remove the pilot bit after the circular groove is formed. Not suitable for metal or toughened glass. Wear protective goggles and gloves during operation.