8 screwdriver bits are stored in the bottom cover, providing ready access to a range of tasks and enabling quick bit changes without leaving the work surface. All bits are magnetic and the length of the bits can be adjusted, helping to secure the bit in place and reach into tight or awkward spaces with ease. Ergonomic design with a comfortable grip helps reduce hand fatigue during extended use, improving control and comfort. A stable base and integrated storage system organize the bits and the tool, supporting a smoother workflow and greater overall efficiency. 23 practical use scenarios Furniture assembly and disassembly: quickly switch among different bit sizes from the bottom cover, with magnetic bits for secure placement and easy reach into recessed screw locations. Home appliance : use the adjustable length bits to reach screws in shallow or deep housings, maintaining a steady grip for precise torque. General maintenance and small projects: keep tools organized on the base while performing routine fixes, electronics cabinet work, or hobby projects that require multiple bit types.