Ideal for screw-tightening tasks such as home repairs, daily projects, and professional construction work. The latest ergonomic design provides comfortable maneuverability for users of all skill levels Built-in lock prevents tools from loosening while working and increases portability and storage convenience Constructed of steel with excellent abrasion resistance to ensure long-term stability and reliability in demanding applications Standard hexagonal shank design provides a secure and no-slip connection to a variety of electric tools. Suitable for professional use in workshops, home and construction sites Unique mechanism allows easy tool replacement, saves time and improves work efficiency. 0.4 inch (10 mm) screw design ensures compatibility with various drills, Manufacturer: yanzunlrn