Sparex source: https://us.sparex.com/levelling-box-less-fork-3-4-unc-16762.html Product: Levelling Box (less Fork) - 3/4 UNC - Sparex S.16762 SKU: S.16762 Listing note: Thread length 139mm - Knuckle Hole Ø mm 16.5mm - Knuckle Width mm 48mm Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.