This kit includes 4 spring loaded T-slot nuts and 4 16mm long button head cap screws in an M6-1.0 thread. The T-nuts can be dropped into the rail at any location - no need to remove the bars!
United StatesLike everything else I have received from Billie Bars - high quality and works well. Love not having to insert the t-bolts from the end of the bar and popping these guys in right where you need them.