Trolley, Trolley Type Push, Maximum Load Capacity 2,400 lb, Trolley Frame Material Cast Aluminum, For Beam Shape Flat, Tapered, For Minimum Beam Flange Width 7 7/8 in, For Maximum Beam Flange Width 12 3/16 in, Headroom to Connecting Shaft 2 1/32 in, Headroom to Mounting Point 1 3/16 in, For Minimum Beam Height 4 in, For Maximum Beam Height 4 in, Includes Not Applicable, Minimum Radius Curve 39 3/8 in, Trolley Wheel Diameter 3 3/10 in, Trolley Wheel Material Plastic