This is a A-71388712 Belt, Chopper Secondary Drive PN: 71388712Main Description As Following : A-71388712 Belt; Chopper Secondary Drive, 213.8" P.N: 71388712 7/8 X 212.75 Wrapped Kevlar CordColor: BlackLength: 212.75Material: Kevlar CordThickness: 0.5Type: WrappedWidth: 7/8 Crossed From: AM71388712 , Found in Section & Models : Belts > Combine Belts, Challenger COMBINE: 660 (SN