These are boards that extend out over the track, supported by a stanchion on the edge of the track. They are found on many F1 circuits and others. These are normally placed on the racing line where they will get most TV coverage. I.e. over the outside lane on the approach to a bend. There are 2 packs. This Pack A contains boards with Allianz, DHL, Rolex, F1 Experiences and Santander on both sides. There is also a pack B with different logos.
(The stanchions come long enough to allow you to sink them into a wood base or we can supply clips for use with plastic track (CfP10) at £4.25 for 10 or for use with wood track (CfW10) at £4.25 for 10 and then you simply cut the stanchion to the height you want. See the page on Fixing Clips for more information.)