THIS IS A VINTAGE SCHWINN APPROVED REAR DERAILLEUR IN MINT NEVER USED CONDITION. YOU CAN FIND USED ONE BUT HERE IS A NEVER USED ITEM, NEW OLD STOCK. THIS ITEM WAS USED ON SCHWINN ROAD BIKES AND ON THE SCHWINN BIKES LIKE THE STINGRAYS BIKES AND CAN BE USED ON A SCHWINN KRATE BIKE LIKE APPLE KRATE, ORANGE KRATE, LEMON PEELER, PEA PICKER, COTTON PICKER, GREY GHOST AND MANY OTHERS. IT WILL FIT SCHWINN ROAD RACING BIKES 5 / 10 SPEEDS AS WELL.