Very convenient for tightening screws and bolts in tight or hard-to-reach places. The head of the shaft can be fitted with a hex shank screwdriver bit. The flexible output provides sufficient safety. The flexible extension bar can be used with common cartridge-type hand drills and electric screwdrivers. [Contents] 8 Hex sockets, 2 Minus sockets, 3 Plus sockets 3 Hex wrench sockets, 2 Star wrench sockets 1 Conversion socket, 1 Extension socket, 1 Attachment ☆ We also have other stylish products and convenient goods, so please take a look at the products in my profile if you are interested. (^_^)