Both, they're available from BMW for less than a fiver for a pair, brand new
They're originally designed for the R1100 series bikes (R11R) and some people fitted to R11GS
They do fit R1150 series bikes (well one does) and the other doesn't properly, well maybe of a fashion because the injectors are different from the R1100 series injectors
In a summary, useless tat, which has no purpose...................apart from a possible aesthetic viewpoint