The ROHN GA45GD is used to prevent attaching guy wire directly to the tower - this distributes the forces throughout the entire tower, rather than just one tower leg. It mounts to the 55G tower at any horizontal brace. It is recommended that they be used at every guy level. Each hot-dip galvanized guy bracket assembly comes complete with all necessary mounting bolts and integrated guy wire attachment points. Assembly required. GENUINE ROHN PART