High Quality Material - Made of high quality high carbon steel, it is exceptionally strong, impact resistant and wear resistant. Not easy to break due to vibration. splitting wood coneis not used for freshly cut logs. 3 drill patterns: 32mm/42mm, square handle, round handle, hex shank. Different models and sizes to meet all your needs and can be used for different types of electric drills. Efficient Work Saves Time: Efficient wood clogging and opening tools for quick log splitting and increased productivity. Titanium coating to reduce friction and heat through heat treatment,makes cutting easier and more durable. Unique design and easy to use: geometry reduces friction and saves time. Just install the bit in the electric drill. (Fits most magnetic drills). Advantage: This versatile hand tool is perfect for cutting oak, walnut, etc. Widely applicable at home, outdoors, camping, farm. Not recommended for knotted woods or large diameter hardwoods.