The RackSolutions 2 Post Rack Rails are designed to give users a durable, high-performance rail solution for standard 19" server racks. As a result, the 2 Post Rack Rails are simultaneously durable and versatile. The rails are compatible with with Dell, HP, and IBM servers. The rails can be mounted in both center and flush settings to racks with square, round, or threaded holes. The 1U 2 Post Rack Rails also come equipped with a built in cable management bar and includes Velcro straps to ease cable routing. All necessary hardware, such as screws and cage nuts, come included.