High Quality Material - Made of high quality high carbon steel;its exceptionally strong; impact resistant and wear resistant.No easy to breaks due to vibration.3 Modes Drill Bits - Square Handle;Round Handle;Hex Shank.Different models and sizes to meet your all needs and can be used for different types of electric drills.Efficient Work to Save Time - Efficient tools for logging and open the wood for quick separation of logs and increased productivity.Titanium coating to reduce friction and heat by heat treatment;makes cutting easier and more durable.Unique Design and Easy to Use - Geometry reduces friction and saves time.Just install the drill bit into the power drill.( Fit most magnetic drills)ADVANTAGE - Split tough oak; hickory; walnut; sycamore;Not recommended for knotty woods or large diameter hardwoods. Dimensions: 15.8*3.2*3.2cm Color: Black Material: Carbon steel