5, went with an 8 they fit perfectly. The crossbars will whistle while driving over 40mph and increase in noise the faster one drives. Ottimi, le usiamo da anni per i ns. Had I tried the Avantree first I could have saved $279 which was the cost of the ReSound TV transmitter. -This would be a very useful feature but every time you get up and move or sit down, it plays a bell notification and stops the music. These are not Sony ?Extra Bass? headphones as described in the title. After the first use one of the hooks Broke so easily when removing ???? It is a bit short so using this as a dual level hanger is impossible as clothes hit the bar but using one bar for empty hangers and one bar for clothes works great! We got two of them in red and blue. However, i installed it in my laptop and switched the unit on.