It is Strong™ Rack Horizontal 2" Offset Lacing L Bar (Black | Pack of 5). Improve wire management and get a clean, professional rack with the Strong™ Rack Offset L Bar. A slim profile and 20 zip-tie slots get wires where they need to be – and keep them there securely. An updated tray-style design prevents wires from rolling and components from sliding, while also providing tons of configuration options. Stack them, offset them, space them, or nest them – when it comes to organizing wires, cleaning up your rack, and supporting large pieces of equipment, these are your go-to products for the job.