Thule Roof bars that attach to roof rails, (I had these on a Mazda 6 estate that I have now sold). Total length of bars is 4ft / 48”, they can adjust between a 3ft / 36” - 3.5ft / 42” gap. Really easy and quick to put on, I have lost one of the plastic caps that push onto the ends but that does not effect its use. Comes with two keys. Pick up from Byfleet KT147EL
eBay