Harrington push geared trolleys help you maneuver easily on your most demanding lifting operations. They feature specially designed contoured wheels that ensure reliable tracking, and their sealed ball bearings avoid maintenance hassles and provide smooth operation. Many Benefits From More Features: o Get sure trolley with specially designed contoured wheels that fit both tapered and flat-flanged beams. o Maintenance-free, sealed precision ball bearings are lubed-for-life and offer smooth movement, with low friction and long life. o Get strength and rigidity from a lightweight, compact and long life. o Easily adjust trolley to fit a wide variety of bea flange widths. o Wide standard flange ranges reduce the need for optional extended shaft kits. o Match the needs of the job with a variety of trolley hoist suspensions.