The Rhino-Rack Quick Mount Heavy Duty Spacer pair (10mm) adapts Heavy Duty bars for use with RLT600, RCH and RCL legs. Sold as a pair that fits one bar, the kit includes the necessary hardware so Heavy Duty crossbars mount correctly to Quick Mount-style legs, providing the added spacing required to align the bar profile with leg fittings.
Rhino-Rack Quick Mount Heavy Duty Spacer - 10mm - Pair