Sparex source: https://us.sparex.com/planter-drive-chain-2050-1-x-56-links-130689.html Product: Planter Drive Chain 2050-1 X 56 Links - Sparex S.130689 SKU: S.130689 Listing note: John Deere: Main wheel drive chainCase-IH: Main wheel drive chain Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.