Amazon.com: FITHOIST Manually Trolley 1/2 Ton | 1100LBS Capacity Steel Push Beam Trolley | Adjustable for I-Beam Flange Width 3" to 5" | Installed onto Various Beams : Industrial & Scientific
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OZ Lifting Products 1/2 Ton Push Beam Trolley with Hanger OZ05PBTA-OBH
VEVOR Manual Trolley 2-Ton Beam Trolley with 2.8-6.9 in. Adjustable Width Push Beam Trolley Steel with Dual Wheels Hoist STXCDSDLS2000ROYEV0 - The Home Depot