Reliable 1/4 in hex shank: Fits a variety of electric and pneumatic tools and helps prevent the bit from slipping or falling off during operation. Easy to use: Allows quick installation, locking and unlocking of drill bits; the impact socket adapter simplifies drilling tasks. Socket conversion: A conversion accessory that changes the 1/4 in hex shank to another size for compatibility with different sockets. Stable and portable: Compact and lightweight; the impact driver extension bar is easy to install in minutes and provides stable fixing. Use scenario: Attach to a drill or impact driver to drive or loosen fasteners using sockets, enabling efficient work in tight spaces. Use scenario: Quickly switch between drill bits and sockets during a project, reducing downtime and improving workflow. Use scenario: Use the compact extension bar to reach screws or bolts in restricted areas where access is limited.