I am wondering if someone could tell me what size hex key do i need for the

slider caps on my 2011 FXDF Fat Bob. If someone could please Help. I have tried a 5mm that seems to small, and 6mm is to big or is it some other size?

probably imperial,1/4 inch.

Thank's brucefxdl, i will give that a try, i was not to sure wether it was metric or not as i am new to harley maintanance.   

cheers