All Globe racks are made with T-channel aluminum rails to maximize versatility, capability, and creativity. Many of our Globe-branded accessories mount directly to these channels, but they will also accept just about anything you can imagine bolting to them. To help unlock that possibility, the Rack Customization Kit provides an assortment of bolts and T-nuts compatible with our front and rear rack rails. Just BYO milk carton, wine crate, cooler, you name it! Two T-channel rail pieces can be used to increase the effective dimensions of your rack to provide a more secure platform for large or awkward gear.