Features Superior Cutting Performance: Crafted with high-quality diamond particles for exceptional sharpness and wear resistance, ensuring precise and efficient drilling every time Versatile Compatibility: The straight shank design fits most hand electric drills, making it an ideal choice for various drilling tasks across multiple surfaces Ideal for Multiple Materials: Perfectly designed to create clean holes in granite, marble, ceramic tiles, and vitrified tiles, enhancing your DIY or professional projects Easy Installation: With a 10mm shank diameter and a working depth of 58mm, this tool simplifies setup, allowing you to start your projects quickly and effortlessly Diverse Size Options: Available in 4 sizes (22mm, 25mm, 28mm, 30mm) to accommodate different hole sizes, ensuring you have the right tool for every job Features: 1、Selected high？quality diamond particles and reasonable formula can effectively improve the sharpn and wear resistance 2、Straight shank design, suitable for most hand electric drills on the market, with a wide range of applications 3、Suitable for opening holes in granite, marble, all？ceramic tiles and vitrified tiles, etc. 4、The shank diameter is 10mm which is simple to install and the working depth is 58mm 5、Available in four specifications for choice, 22/25/28/30mm, can meet different needs Specification: Item Type: Drill Hole Saw Material: Diamond Drilling Specification: Approx. 22mm / 0.9in 25mm / 1in 28mm / 1.1in 30mm / 1.2in Shank Diameter: Approx. 10mm / 0.4in Working Depth: Approx. 58mm / 2.3in Applicable Equipment: Hand drill, bench drill Package List: 1 x Hole Saw Package List 1 x Hole Saw