"Mounting Locations: -All items are interchangeable and can be mounted on any of the side rails, (left. right, forward, or back) Item Specifics: - All items mount with a M4 set screw, and can be adjusted as needed when installed and moved around without leaving holes in your rail. - M18 Single mounts with 1 (one) set screw, M18 double mounts with 2 (two) set screws, and - M18 Triple mounts with 3 set screws. - All M12 mount with a single set screw. - All versions with latch onto the…