SET includes: 2x SPEED SE, 1x RUN S, 1x LAST S, 2x PILOT SN, 15x BOLT M10x25, 15x RIVET NUT
 
All you need is to add is a rail and guide rollers.
Bolts are perfectly designed to fit between wheels so that you dont need to weld the rail. Holes in our rails are every 400mm and are slotted. Just mark drill and tap. Making replacing the cantilever rail easy in the future should the gate get damaged,