Double-wide torsion hardware box for 7-foot or 8-foot high garage doors. This kit has the brackets, hinges, rollers, drums, bearing plates, cables, and fasteners for a full torsion setup on a two-car door. Rollers are 2-inch 11-ball nylon and hinges are 14-gauge steel. it is everything except the torsion springs and shaft, which you size separately based on door weight. Saves you from ordering each piece individually and hoping you did not miss something. This product is for torsion spring systems only, not extension. Pick the correct door height from the options.