Description: They utilize the industry standard T-slot attachments and serve as the base-mount for cargo carriers and other cargo management accessories. Available in Black. These stylish bright Cross Rails- which attach to the factory roof rack side rails- are approximately 25% larger than the factory cross rails. They utilize industry standard T-slot attachments- and serve as the base-mount for the hard cargo carrier- as well as other aftermarket cargo-management accessories. Sold as a set of two.