Professional and practical design, beautiful appearance, small size, large working space. This is a set of carpentry assistants. Triangular shank makes the bit more stable, perfect for electric drills. Easy to use, surface texture design, increased friction for more efficient drilling. You can easily cut large firewood, wood, plastic or low hardness metal, for household or professional use, saving time and labor. Made of 45 steel by hardening treatment, the surface of the drill bit has been core treated. It has high hardness, good wear resistance and long service life. Specification: Material: 45 Steel Application: Split Firewood Max Diameter: 42mm Weight: Approx 668g Package List: 1 x Chopper Drill Bit