Cable bushings are components that allow cables and wires to pass through holes in panels, walls, or other surfaces. Cable grommets protect cables from damage, abrasion, or breakage, and improve the aesthetics and orderliness of wiring. Cable bushings are available in different materials, sizes and designs, depending on the environmental and mechanical stresses to which the cables are exposed. Cable bushings can be ring-shaped, which cover the edges of the holes, or membrane-shaped, which match the diameter of the cables. The cable bushings may be secured by screws or clips. The use of cable glands is simple and quick.