Each D-Ring Hook Size: 1U, W 1.73 x D 2.7x H 1.73 inches (44 x 68.5 x 44 mm); Cable Storage Space of Each Hook: D 2.56 x H 1.57 inches; Back Installation Board: W 1.73 x 0.78 inches. Functions: The Bracket Organizer Hook Mount Set is Designed for Organizing or Managing your Wires and Cables, Such as Power Cords, Fiber Optic, Network Patch Cables and more. Keeping your Operations Running Smoothly.