Original two speed jackshaft from a 1968 Rupp TT500 mini bike. Great condition overall, the teeth on the sprockets aren't worn or damaged. The torrington bearing (one way sprocket bearing) was badly damaged and unusable. It was removed from the sprocket and the sprocket bore was inspected. This bearing is available from BlackWidowMotorpsorts.net for $20 http://blackwidowmotorsports.net/_13007_bearing_one_way_1968_tt_500.html Please look at the pictures closely as they're the be...st description I can give you. If you need more pictures or have questions, just ask. I will ship for a flat rate of $13.65 to the lower 48 states. All others should contact me for a quote prior to bidding/buying.