Mag Daddy J-Hooks will support all types of data comm and low voltage cables, such as CAT 5, CAT 5e, CAT6, CAT 6a, fiber optic, and innerduct. J-Hooks can be attached to a variety of structures and are Plenum Rated. Locations: Steel, Beams, Purlins, Ceiling Decks, Drop Ceiling Channels, Metal Joists, Frame Rail, Screw Heads, Metal Washer, etc.