Made of steel with high carbon content (65 ), these forests are anti -rust and durable, and they can be used to treat all kinds of cork, hardwood and plastic materials. These are practical drilling tools for DIY enthusiasts and carpentry lovers. The self-directed thickness head of the roots can help the forest to be positioned with precision and quickly on wood for easy drilling and solid central design makes the forest stable and solid during drilling, and the wide blade can provide Faster drilling, easier to eliminate shavings and walls of smoother holes. Includes an elongated body for deeper holes and better grip. This design prevents the hexagonal stem from sliding during work and the hexagonal rod can be used with hand drills and workbench. Pilk the drilling and punching of wood For tender wood, hardwood and beams Smooth and lively drilling, use of high efficiency.work with high efficiency drilling, precise drilling, good kidnapping of shavings, relatively deep drilling.