Sparex source: https://us.sparex.com/pto-sleeve-increaser-female-spline-1-1-8-6-x-male-spline-1-3-8-6-with-249.html Product: PTO Sleeve Increaser - Female Spline 1 1/8'' - 6 X Male Spline 1 3/8'' - 6 With - Sparex S.249 SKU: S.249 Listing note: Length: 56mm (2-3/16'')Increases length Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.