The Rhino-Rack Vortex Load Holder is designed so that you can secure your load in position so it doesn't slide in transit possibly damaging other items you have mounted to your roof racks.
Sold as a pair, they stand 100mm (4") in height and slide into the channel of your Rhino-Rack Vortex Roof Racks. It's a great little accessory that is recommended for use if carrying multiple elongated items.
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