45-Piece Set: This screwdriver bit set features a variety of bits: slotted, Phillips, square, Torx, two hex nut sockets, and an extension rod. Multiple spares for commonly used sizes ensure you're always prepared for any task—no more tool shortages Premium Materials: Made with S2 steel bits, CR-V hex nut sockets, and an extension rod featuring hex shank CRV, aluminum core, carbon steel outer tube, and black PE heat-shrink plastic. The screw bit set is built for exceptional durability Advanced Rust-proof Coating for Longevity: The screwdriver bits and hex nut sockets feature a phosphate blackened finish, while the extension rod is electroplated. This enhances the sleek appearance, ensuring long-term use and reliable performance Strong Magnetic Design for Effortless Operation: Built-in powerful magnet ensures secure screw retention and precise alignment. No more frustrating slips or struggles—improve efficiency while reducing time wasted on misalignment and dropped screws Easy to Store: This bits set includes a durable storage case with dedicated slots for easy access and secure storage. The removable organizer strip allows quick bit retrieval, making storage and portability effortless—no more frequent case openings