- Used to provide support for cables that run horizontal and vertical along walls backboards or flat surfaces-Economical solutions to more expensive cable tray or ladder rack runway systems-Constructed of durable die-cast aluminum-Designed with two mounting holes per side for several mounting methods-Smooth rounded edges to avoid cables being damaged-Packaged in 100-pack ideal for small to large installations-Required (4) #10 machine screws to secure D-Ring into walls or flat surfaces-D-Ring is also avail