From high strength metal, stable, firm and durability Lightweighted Size: small size, easy to store and carry, bring you convenience of Application: It can be used for installation on Tool with shapes such as pneumatic screwdrivers, electric screwdrivers, air drills, electric drills, and manual screwdrivers Usage: suitable for screwdriver handle or electric screwdriver tool ( three-jaw) to drive the sleeve After installation, the joint can be converted into a square for head, which can be used for the installation of the sleeve A powerful tool for conversion 1 / 4 ( 6mm) hexagon connecting rod adapter drill chucks M14 polishing disc connecting rod power tool accessories, Manufacturer: yanzunlrn