Features: Suitable for various materials such as ceramics, tiles, glass, marble, concrete, and stainless steel, meeting the drilling needs of different materials, it is ideal for home decoration and professional construction. Using hard alloy, it has high strengths and wear resistance, and can easily handle hard surfaces. The drilling process is fast and efficient, reducing operation time and energy consumption. The unique eccentric structure enhances the stability of the contact between the drill bit and the material, effectively reduces the risk of slipping, ensures accurate positioning for each drilling, and improves work accuracy. We offer various diameter specifications including 6mm, 8mm, 10mm, and 12mm to meet the needs of different apertures sizes, making it convenient for users to flexibly choose according to specific tasks. Suitable for various electric drills and handheld drills, easy to install and replace, users can freely switching between different work environments, improving work efficiency and convenience. Specifications: Material: Cemented Carbide Diameter: 6/8/10/12mm Handle: 6.35mm Hexagonal Shank Type:6/8/10/12mm 4Pcs Drill Bit,5Pcs 6mm Drill Bit,5Pcs 8mm Drill Bit,5Pcs 10mm Drill Bit,5Pcs 12mm Drill Bit Package Includes: 4/5Pcs Eccentric Twist Drill Bit note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.