Features • Superior Cutting Performance: Selected high-quality diamond particles enhance sharpness and wear resistance for efficient drilling on tough materials • Universal Compatibility: Straight shank design fits most hand electric drills, making it versatile for various DIY and professional applications • Wide Material Range: Perfect for creating holes in granite, marble, ceramic tiles, and vitrified tiles, accommodating diverse project needs • Easy Installation: 10mm shank diameter allows for quick setup, while the 58mm working depth ensures effective drilling for deeper holes • Multiple Size Options: Available in 4 specifications (22/25/28/30mm) to meet different project requirements and preferences 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