LightRail     Extreme Duty 3.0, 3.5 and 4.0 Trolley Wheel Kit
LightRail Extreme Duty 3.0, 3.5 and 4.0 Trolley Wheel Kit at HorticultureSource.com -
EXTREME DUTY TROLLEY WHEELS, for LightRail 3.0, 3.5 and 4.0. A suggested upgrade item for moving multiple lights +/or heavier loads such as heavier LED, Plasma or any light with an internal ballast weighing 35 pounds or more.. They are engineered with steel on steel ball bearing with a nylon over molded tire for smooth quiet operation. Rated up to 60 lbs per set and come with a lifetime warranty!