This is a A-H116275 Retainer, Concave PN: H116275Main Description As Following : A-H116275 Retainer, Concave P.N: H116275 Used When Swithching From 14 To 13 Bar Concave (Fastens To Last Bar Of Concave) Replaces: RET7720 JOHN DEERE COMBINE Found in Section & Models : Threshing Area > Concaves, John Deere COMBINE: 7720 (SN <600004 Titan), John Deere COMBINE: 7721 (Titan) Associated Items : New Also A-JD-O-OMH111330, A-JD-O-OMH120048 And : Used When Swithching From 14 To 13 Bar Concave (Fastens To Last Bar Of Concave)