This is a A-CL50D 50 Double Connector Link (Drives) PN: CL50DMain Description As Following : A-CL50D 50 Double Connector Link (USA) P.N: CL50D A-CL50D 50 Double Connector Link (USA) P.N: CL50D Replaces: SW50DCOUS JOHN DEERE , Crossed From: 2221-44121 JOHN DAY , 803-320500 , , 803320500 , Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Roller Chains and Attachment Links, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : High Quality Afternaket Shipped from Both US and Canada