Thule VeloSpace XT 3 plus additional Bike adapter - www.roofracks.co.uk 

Studio demonstrational video of the Thule VeloSpace XT 3 tow ball mounted cycle carrier. Showing the carrier being positioned on to the vehicles tow ball and the additional bike tray to support a fourth bike being fitted. The carrier can be tilted allowing access to the boot with the bikes fitted.
Thule 939 VeloSpace XT 3 with addition Bike adapter package - www.roofracks....