I keep my sockets in here. Inside is a 6, 7, 8, 9, 10, 11, 12, 13, 14mm socket and an extra 10mm socket as well as a 10mm and 8mm deep socket. I also have a funky 10mm hex head to 1\4" hex female adapter to use bits with. And of course a 3" extension and the bits themselves.. Oh and a 1\4 square to hex converter and a 1\4" hex magnet. The pics do not show all the extra sockets I had listed earlier, I added the oddball sizes because I ride an oddball bike.