Amazon.com: 2 Ton Push Beam Trolley Adjustable for I-beam flange width: 4" to 8" : Industrial & Scientific
Amazon.com: BEAMNOVA Adjustable Manual Trolley for PA200 PA250 PA300 PA400 PA500 Electric Hoist, 2.68-4.33 in I-Beam, 0.5 Ton 1102 LBS Capacity, Push Gear Overhead Heavy Duty Wheels : Industrial & Scientific
Amazon.com: BEAMNOVA 1 Ton 2204 LBS Electric Trolley for Power Hoist, Fit 2.68-4.33 in I-Beam, for PA600 PA700 PA800 PA900 PA1000 Hoists Push Geared Overhead Heavy Duty Wheels Wide Flange : Industrial
I-Beam Trolley with Sealed Wheels - 1,000 Pound Capacity