This is a A-CL40D 40 Double Connector Link (Drives) PN: CL40DMain Description As Following : A-CL40D 40 Double Connector Link (USA) P.N: CL40D A-CL40D 40 Double Connector Link (USA) P.N: CL40D Crossed From: 2221-42721 JOHN DAY , 40DCL , , 803-320400 , , 803320400 , 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