General description These Helical Wood Drill Bits are made from high-quality carbon steel, ensuring durability and long-lasting performance. The set includes 8 pieces with varying diameters, allowing you to tackle a wide range of drilling tasks in wood and other materials. Technical specifications Material: High-quality carbon steel Length: 230 mm Diameters: 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm Usage Suitable for drilling in wood, wood products, plastic, plywood, composite panels, and other materials. Ideal for various applications including industrial installations, wood processing, maintenance, modeling, and installing spherical door handles and drawer handles. Other information Includes a beautifully crafted wooden box for storage, with numbered positions for each bit for easy access. The box features holes and foam padding for effective protection of the bits.