The Model E Ladder Support is used for supporting the upper end of an extension ladder away from the cable and strand. Can be used on any wooden or fiberglass extension ladder up to 18 in. (46cm) wide, with side rails up to 2 1/8 in. (54mm) wide, and on any 1/4 in. to 7/16 in. (6-11mm) diameter strand.Also includes a safety rope and two tether chains.