Galvanized steel track, rear support bracket with nylon rollers. 75 lb. test rated, requires 1-1/4 in clearance for installation. Track may be cut down for shorter drawer and can be used for top or bottom mount installations. Monorail design. Contains 1 track, 1 roller guide, 1 rear mount bracket, 1 left-hand roller, 1 right hand roller, 1 set of installation fasteners.