FASTCLIP is a new rail fixing system that uses
connecting elements pre-assembled on the rails.
FAC 4 is a machine designed by Dipsa Technes to enable one operator
locking and unlocking all 4 FASTCLIP couplings at the same time,
and fixing a full sleeper to the rails.
The handlebar activates the two oil-pressure cylinders which control
four rail couplings thrust levers.