The RFR-ERRK-16 is a pair of heavy gauge 10-32 threaded rear rack rails designed to provide secure and stable equipment mounting in 19-inch racks. The rack rails are constructed with high-quality materials, ensuring durability and strength. The RFR-ERRK-16 is sold in pairs and comes with all the necessary mounting hardware, making it easy to purchase and install. With its threaded design, the RFR-ERRK-16 makes it easy to mount equipment in a secure and stable manner.