This is a A-CA620O CA620-O Offset Link PN: CA620OMain Description As Following : A-CA620O CA620-O Offset Link P.N: CA620O A-CA620O CA620-O Offset Link P.N: CA620O 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