Features Superior Diamond Material: Crafted from high-quality diamonds, this drill bit features a sharp blade that ensures long-lasting durability and efficient cutting performance Efficient Chip Discharge: Designed with an oval chip hole, this tool minimizes cutting resistance, allowing for quicker and smoother drilling with reduced downtime Versatile Application: Perfectly suited for various materials, including marble, concrete, and artificial stone, making it an essential addition to your toolkit Features: 1、Adopt good？quality diamond particles, and a reasonable formula can effectively improve the sharpn and wear resistance 2、Using straight shank design, suitable for most hand electric drills on the market, with a wide range of applications 3、The product is suitable for opening holes in granite, marble, all？ceramic tiles, vitrified tiles, etc. 4、Applicable equipment contain hand drill, bench drill, very versatile and practical 5、Diamond core bit poss stable structure, excellent performance and long service life Specification: Item Type: Diamond Drill Bit Material: Diamond Drilling: Approx. 8mm / 0.3in Shank Diameter: Approx. 10mm / 0.4in Working Depth: Approx. 4m / 1.7in Applicable Equipment: Hand drill, bench drill Package List: 10 x Diamond Drill Bit Package List 10 x Diamond Drill Bit