General description Useful drilling tools for easy and quick drilling of holes in glass, tiles, granite, ceramic, and marble. Made of high-quality diamond material, these hole saws are very durable and feature sharp, durable teeth that ensure powerful and highly efficient action. The kit includes different sizes of hole saws (14 types ranging from 3mm to 70mm) to meet various needs, making it ideal for creating clean and precise holes for home, hobby, crafts, and construction. Technical specifications Color: Silver Material: Diamond Surface Treatment: Zinc Plating Quantity: 14pcs Hole Saw Sizes: 3mm, 5mm, 50mm, 51mm (x5), 52mm, 53mm (x3), 58mm, 70mm Total Height: 50mm to 58mm Package Size: 12 * 8 * 7cm / 4.72 * 3.15 * 2.76in Package Weight: 436g / 1.0lb Compatibility and accessories Compatible with standard electric drills, ordinary electric drills, cordless drills, and bench drills. Usage Can be widely used for drilling glass, tiles, granite, ceramic, and marble. Always use water for