The Guardian Fall Protection "Halo Anchor" is a reusable 1/4-Inch thick steel roof anchor that is designed to be used for fall arrest or fall restraint purposes. Part of our residential horizontal lifeline system, the Halo Anchor is designed to be removable (and may be used again after an inspection) and supports a minimum breaking strength of 5,000 pounds. This anchor comes complete with a zinc plated forged alloy steel O-ring. This product is supplied with all the necessary fasteners to nail or bolt into the roof member.