General description The 9-piece crown drill bit set is designed for high-quality drilling in various materials. Made from high-quality steel alloy and diamond-coated metal, these drill bits feature sharp tips for easier and more comfortable drilling. The diamond powder coating enhances cutting performance and extends the life of the bits, making them ideal for creating clean and precise holes. Technical specifications Material: High-quality steel alloy with diamond coating Includes: 6 different drill bits, 2 pilot drill bits, and an Allen key Sizes: φ22, φ28, φ35, φ44, φ68, φ73 mm Perfect Versatility This drill bit set is versatile and suitable for a wide range of materials, including: Ceramic Tile Clinker Brick Plasterboard Concrete Cement Other information