"(EO)2" lockable roof rack mounting system, 22" bottom rail, 16' top rail. Both keys included. $120
Great solution for mounting pelican or other cases onto a roof rack but retain the ability to quickly remove them.
Video on how this system works:
Brief Explanation of How (EO)2® Works
Product Links:
(EO)2 22" Low Profile Bottom Rail - $65
(E0)2 16" Top Rail w/lock - $109