The 4th adapter is NOT included. Thule Velo Compact 927 3, 4 bicyle tow bar mounted rack has the next generation of Thule's tow ball coupling, increasing the rack's load capacity.
The new clamp'hangs' the carrier on the hitch before tightening allowing easy adjustment of the carrier before closing the clamp to fix it in position. Easy mounting of bikes through detachable bike arms. The item "Thule VeloCompact 927 Towbar Mounted Cycle Carrier 3 Bikes Rack Lockable" is in sale since Saturday, January 4, 2020. This item is in the category "Vehicle Parts & Accessories\Car Accessories\Touring & Travel\Bike Racks".
The seller is "adidastrainers21" and is located in United Kingdom. This item can be shipped to United Kingdom.