This is a A-AXE61091 Chain, Gathering, Chrome Pin PN: AXE61091Main Description As Following : A-AXE61091 Chain, Gathering; Chrome Pin P.N: AXE61091 Chain: 620Links: 48Paddle Size: 8Replaces: AH234578 Replaces: AH234578 JOHN DEERE COMBINE , Crossed From: AMAH234578 , , SH660 SHOUP , WN-AH234578 , , WNAH234578 , Found in Section & Models : Headers/Platforms/Feeder House > Corn Head Parts, John Deere HEAD, CORN: 606 (SN 745101>), John Deere HEAD, CORN: 608 (SN 745101>), John Deere HEAD, CORN: 612 (SN 745101>), John Deere HEAD, CORN: 616, John Deere HEAD, CORN: 618 Associated Items : New Also This is An Aftermarket Product And : Used with 6 Tooth Drive Sprocket and Idler. Chain: 620 Links: 48 Paddle Size: 8 Replaces: AH234578