Feature:1. Industrial Grade Material: Crafted from high strength M35 carbide carbide, the eccentric drill bit ensures efficient and stable drilling for deep, angled, blind holes, with exceptional durability and resistance to erosion and deformation.2. Fast Chip Removal, High Efficiency: Unique eccentric M35 bit design easily penetrates various materials, while the U shaped spiral groove prevents chip accumulation and retention, enhancing drilling efficiency.3. Wide Application Range: Suitable for multiple materials such as stone, concrete, wood, steel, brick walls, plastic, tiles, and marble, these drill bits are versatile for various construction tasks.4. Drill Bit Sizes: Includes 4 pieces of 1/4 inch (6, 8, 10, 12 mm) hex shank twist drill bits, offering versatility in usage and providing a secure grip for different drilling applications.5. Machine Compatibility: Designed for compatibility with electric drills, and bench drills, the high strength eccentric drill bit is convenient to use and ensures high efficiency in a variety of drilling tasks.Specification:Item Type: Eccentric Twist Drill Bit SetMaterial: Cemented Carbide M35Size: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in, 12mm / 0.47inTotal Length: Approx. 150mm / 5.91inHex Shank: 6.35mm (1/4 inch)Compatible with: Hand Drill, Electric Drill, Table DrillApplication: for various common ceramic tiles, antique tiles, foam bricks, all kinds of wood..Package List:4 x Drill Bit4 x Storage BoxNote:There may be size discrepancies.