1.25" to 2" Adapter for GuideRail and HighNoon FC. This aluminum sleeve slides over the 1.25" hitch tube, bolts on and allows you to use the 1.25" model in a 2" Hitch. The proprietaty hitch sleeve is rock solid in the hitch. This sleeve can only be used on the 1.25" GuideRail and 1.25" or Solo HighNoon FC.