Brand , lightweight conversion adapter that expands the functionality of threejaw chuck tools. Purpose: installs in a threejaw chuck on a screwdriver or drill and converts the chuck connection into a square drive for socket/sleeve use. Key benefits: Adds socketdriving capability to electric screwdrivers, drills, and manual screwdrivers without changing tools. Small, portable design that is easy to store and carry for field or work. Simple installation: clamp the adapter in a threejaw chuck, then attach sockets to the square drive for immediate use. Function and performance: after installation in the threejaw chuck, the adapter presents a square head that accepts standard sockets or sleeves, enabling conversion from a chuckmounted bit driver to a socket driver. Compatibility: suitable for use with tools that have threejaw chucks, including pneumatic screwdrivers, electric screwdrivers, air drills, electric drills, and manual screwdrivers. Practical use scenarios: 1. Onsite maintenance: convert a cordless drill into a socket driver to quickly install or remove machine fasteners and sleeves. 2. Assembly work: use an electric screwdriver fitted with the adapter to drive socketmounted nuts and sleeves in furniture or equipment assembly. 3. Light automotive and workshop tasks: attach sockets to an air drill or electric drill via the adapter for fastening or loosening small to mediumsize nuts and bolts. User tips: ensure the adapter is securely tightened in the threejaw chuck before use and select appropriately sized sockets/sleeves for safe operation. This compact conversion adapter delivers quick, toolsaving flexibility for a range of screwdriver and drill types.