I am looking for and old socket set that had one driver. I've only seen 2 of these in my life time. They're are 5 sockets that are double sided. They slide into and stay on the driver. When you want to use one you just side then off and put the size you want to use on the end. I can't not find any of these at all. One of the maintenance techs I work with had one that was given to him as a present for Christmas one year. I'm not sure of the brand. I would love to adds one of these to my tool box at work. Can anyone help.