Trolley, Trolley Type Push, Maximum Load Capacity 1,000 lb, Trolley Frame Material Steel, For Beam Shape Flat, Tapered, For Minimum Beam Flange Width 2 17/32 in, For Maximum Beam Flange Width 8 in, Headroom to Connecting Shaft 1 1/8 in, Headroom to Mounting Point 5 in, For Minimum Beam Height 2 3/8 in, For Maximum Beam Height Not Applicable, Includes Not Applicable, Minimum Radius Curve 2 3/4 in, Trolley Wheel Diameter 3 3/10 in, Trolley Wheel Material Steel, Manufacturer's Warranty Length 5 yr WARNING: Cancer - www.P65Warnings.ca.gov - Nickel (Metallic)