Knight 7500 Series Aluminum Bridge Crane System.System was removed in working condition no hardware is included System was set up with 1 bridge with push trolleys.1000 Lb bridge capacity, 1500 Lb runway rail capacity. Capacity will vary based on your specific set-up.RAD7500 Rails. 4" Inside width. 8" height.Includes the following sections:(1) Bridge Rail: 22' lengthTotal of (17) runway rails: (11) 25' Length(2) 24' Length(3) Cutoff Sections - 14', 11', 12'