The RK-RR20 is a pair of heavy gauge, 10-32 threaded rear rack rails designed to provide reliable and stable equipment mounting in 19-inch racks. The rack rails are constructed with high-quality materials, ensuring durability and strength. The RK-RR20 is sold in pairs and comes with all the necessary mounting hardware, making it easy to purchase and install. With its threaded design, the RK-RR20 makes it easy to mount equipment in a secure and stable manner.