12pcs/set Socket Adapter Hex Drill Nut Driver Power Shank Connecting Rod Head Extension Bits Bar Wrench 8 + 4 combination

Description

Made of top-class material, solid and serviceable. Suitable for a screwdriver handle or electric screwdriver tool (hexagonal hole or three-jaw chuck) drive sleeve to use. After install the hexagonal size can be converted to square head size,so use to install the sleeve.