Suntour Micro-Lite Freewheel

They call this freewheel the "lite" for a reason. It only weighs 6.2 ounces. A similar 6 speed Suntour Winner Pro freewheel with the same gear ratio weighs 14 ounces. That's huge! These freewheels were trusted by racers and elite amateurs for years. It has not been rebuilt, but it has been cleaned and makes and excellent noise! 

Ratio - 13/22