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 Lightweighted Size : small size , easy to store and carry , bring you convenience 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 From high strength metal , stable , firm and durability, Manufacturer: YUGSHNKFC