The Quick Mount Heavy Spacer allows you to fit the Rhino-Rack Heavy Duty Bars to RLT600, RCH and RCL legs. This kit fits 1 bar. Includes Hardware - M6 Channel Nut, M6x30 HD Cap Screw. Requires a 5mm Allen Key to install. Spacer sits on top of the leg, and the M6 channel nut secures to the bottom channel of the HD bar for easy mounting. Enjoy peace of mind with a 5-year warranty. Designed, engineered, and tested in Australia for maximum durability and longevity for wherever your adventure leads. Designed, engineered, and manufactured in Australia. At Rhino-Rack, we believe there's an adventurer in all of us. It's what drives us to create world-ready outdoor gear, born and proven in Australia. We believe life is better when we Make Space for Adventure.