Sparex source: https://us.sparex.com/weasler-universal-joint-1-5-16-x-4-standard-duty-128218.html Product: Weasler Universal Joint - 1 5/16'' X 4'' (standard Duty) - Sparex S.128218 SKU: S.128218 Listing note: Series: 44 Series Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.