The Lot of 9 StarTech CMHOOK1U 1U Server Rack Cable Management D-Ring Hook is a set of server rack cable management tools designed to organize and secure cables in a server rack. Made by the trusted brand StarTech, these D-Ring hooks are specifically designed for easy cable management in a 1U server rack. With a durable construction and a compact size of 1.8 x 3.9 inches, these hooks provide a convenient solution for keeping your server rack cables neat and tidy.