7-piece diamond drill set 10-100 mm for ceramic tiles, glass, porcelain, marble

General description Excellent Performance - The 7-piece diamond drill set features a unique hollow design for clean drilling and fast chip removal, allowing you to create perfect holes without burrs and wobble. This tool is resistant to small incisions and boasts a high punching speed, improving work efficiency and saving time and effort. This economy set includes a total of 7 diamond hole saws, making it versatile for various drilling needs. Technical specifications Length: 5 cm Diameters: 10 mm, 25 mm, 40 mm, 55 mm, 70 mm, 80 mm, 100 mm Installation Compatible with a regular electric drill Usage Apply cooling water to surfaces while drilling Start drilling at a 45-degree angle, then drill vertically Use gentle force, especially at the start and end of drilling Ideal for fragile hard materials such as glass, tiles, marble, and granite Suitable for daily glass repair and installation at home Perfect for both beginners and professionals to drill shallow holes