The CMHOOK1UN Vertical Cable Management D-ring lets you add a 1U metal cable hook to your server rack or cabinet to provide an organized channel for your cables. This TAA compliant product adheres to the requirements of the U.S Federal Trade Agreements Act (TAA), allowing government GSA Schedule purchases. Constructed of high-quality steel, the cable D-ring measures 1.8 x 3.9in (4.5 x 10cm) and offers a flexible opening for easy insertion of bundled cables. Providing strain relief for attached cables, multiple cable rings can be attached to your rack where you need them for a versatile cable management solution. Backed by a StarTech 2-year warranty. 1.8 x 3.9in (4.5 x 10cm) Cable management D-Ring 1U Bracket can be mounted to any standard rack post TAA compliant for GSA Schedule purchases Flexible opening Sturdy steel construction Advantage Route cables neatly through your rack with an easy-to-install cable management ring Increase the longevity of your server and networking equipment interfaces by providing cable strain relief Applications Use with server racks and cabinets, structured wiring closets and network distribution cabling to keep cables neat and tidy.