Amazon.com: OrangeA 2 Ton Heavy Duty Manual Capacity Plain 4000LBS Push Track Roller Trolley Crane Lift Dual Wheels Garage Hoist for Straight Curved I Beam, 2T (Manual Trolley 2 Ton) : Automotive
Beam Trolley 3/4 Ton | Heavy-Duty Cast-Iron for I-Beam Systems
Jervis Webb I-beam trolley systems from Ultimation - YouTube
Hoist Tracks — Kito Erikkila
Curved lifting monorail - ADEI SAS
2 Ton Push Beam Trolley
VEVOR 0.5 Ton Beam Trolley 1100LBS Capacity with Side Guide Rollers 1.6"-3.3" Adjustable Width Push Beam, Track Roller Trolley with Dual Wheels Garage Hoist for Straight Curved I Beam - Walmart.com
VEVOR Push Beam Trolley 5-Ton Load Capacity I-Beam Trolley 4.5-8 in. Adjustable Width for Straight Curved I Beam(11,000 lbs.) STXCBSFZDBDD5XMPDV0 - The Home Depot