Sparex source: https://us.sparex.com/levelling-box-knuckle-14936.html Product: Levelling Box Knuckle - Sparex S.14936 SKU: S.14936 Listing note: Knuckle Hole Ø mm 22.2mm, Knuckle Width mm 42 & 55mm Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.