(Re-edited & uploaded. Deleted the old video) These rear bike hubs were made for a while in the 1960's by Bendix, then never produced again. They're nicknamed "kickback" hubs because you pedal backwards a couple of inches to change gears, then pedal forward again. They called it an "Automatic" hub. Meant to include more steps but had greasy hands. The hub also includes a typical coaster brake.