Portable Screwdriver Bit Holder Double Head Extension Rod Quick Release 1/4" Hex Screw Adapter Socket Electric Drill Power Tool

[Features]: 1. 1/4 inch Double-head Screwdriver Bit Holder. 2. Quick-Release Keychain Screw Drill Extension Bar Adapter Power Tool. 3. Small size and easy to carry. 4. Universal 1/4inch hex shank socket, suitable for most electric driver, hand held driver and drills. 5. The lightweight quick-change bit holder is simple to install and release each bit. [Specifications]: Material: Carbon Steel + Aluminum Case Socket Diameter: 1/4inch Hex 1/4 inch Double-head Screwdriver Bit Holder The screwdriver shown in the picture and video is not included in the package list.