General description This Diamond Drill Bit Set includes a comprehensive kit with 10 different hole saw sizes ranging from 6mm to 50mm, making it ideal for various drilling needs. It is designed for use on materials such as glass, marble, ceramic tile, and porcelain, ensuring precision and smoothness without broken edges. Technical specifications Material: Rubber base + plastic shell + steel Hole saw sizes: 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 20mm/0.78", 25mm/0.98", 30mm/1.18", 35mm/1.38", 40mm/1.57", 50mm/1.97" Tile drill bit sizes: 6mm, 8mm, 10mm, 12mm Screwdriver length: 126mm Compatibility and accessories Includes: 1 x Drill Hole Locator 4 x Impact Drill glass bits for tiling 10 x Hole saws 1 x Screwdriver Installation Adjustable hole locator with suction cup for stability Movable ball bearings with two modes (3 or 4 bearing fixation) Usage Suitable for drilling holes in glass, marble, ceramic tiles, PVC, and other materials Recommended to use water lubrication to extend