VEVOR 1-Ton Manual Trolley 2200 lbs. Load Capacity Beam Trolley with Dual Wheels 2.5 in. to 8 in. Adjustable Width STXCBSFZDBDD1WL69V0 - The Home Depot
CM 632 Series 1/4 - 1/2 Ton Plain Hoist Trolley 3222
Coffing 1/4 Ton Trolley ET-05-4 Fits Hoist Beam | eBay
CM Cyclone 1/4 Ton Integrated Trolley Hand Chain Hoist 4521
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
Cisco-Eagle Catalog - Electric Hoist w/ Electric Trolley - 1/4 Ton, 15' Lift, 36 ft/min
Cisco-Eagle Catalog - Electric Hoist w/ Push Trolley - 1/4 Ton, 15' Lift, 36 ft/min