Aero-Motive Pow-R-Belt 0674411 Festoon Flat Cable Trolley 2-1/4" I-Beam Lot of 2

Used condition, most of these are missing the rubber bumpers.
Lot of 2.  Intermediate car.
Fits 2-1/4" max beam width.
2" max cable width.
Trolley dimension: 5"W x 5-3/4"L
Urethane rubber wheels.