The SPMB0001 Solar Bracket is designed to mount solar panels to sports style crossbars suited and compatible with both Rhino-Rack Vortex and Rhino?Rack heavy duty crossbars. Forget about sacrificing roof rack capacity for solar power. With the SPMB0001 solar brackets your solar panels sit lower than the crossbars, allowing for continued use of the roof rack even with a solar panel installed. Each kit provides an adjustable, secure method of mounting your new REDARC fixed solar panel to your roof rack.