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. Note: Our wood splitting cone drill bit is not used for freshly cut logs. 3 drill modes: 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 to save time: efficient tools for clogging and opening wood for separation rapid log processing 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. Simply install the drill bit into the electric drill. (Fits most magnetic drills). Advantage: This versatile hand tool is perfect for cutting oak, walnut, etc. Widely applicable to home, outdoor, camping, farm. Not recommended for knotted wood or large diameter hardwood. Quantity delivered: 4 pieces (32 bits + 3 rods (round shank, square shank, hex shank)