Diamond Hole Saw/Marble Openings

Material: Diamond-coated for durability and effectiveness. Application: Suitable for drilling materials like ceramic tile, marble, granite, glass, and concrete. Usage: Requires water for lubrication during use to prevent burning the diamond coating. Compatibility: Can be used with standard electric drills. Sizes: The set includes bits with diameters of 20mm, 25mm, 30mm, 32mm, 35mm, 40mm, and 50mm.