The Eezi-Awn K9 Roof Rack Accessory Adapter Set comes with a total of 2 adapters. This is the best way to utilize the side of your K9 Roof Rack. This adapter perfectly matches the shape of the K9 rack edge, and attaches to the 6mm slot on the top of the rack edge, creating a vertical surface for mounting practically anything : awnings, shovels, axels, hi-lifts, and more! Made from high-grade, powder-coated aluminum to match the rack, it is a great option to expand your rack options.