The product is a set of 33 UNIRAC 1/4"-20 extruded U-nuts designed for mounting on racks with a rack unit height of 18. Made of stainless steel 18-8 304, these U-clip-on nuts provide a secure and stable way to attach equipment and accessories to server racks in an enterprise networking setup. The UNIRAC brand ensures high quality and durability for your networking infrastructure. T1 Solar box