This Vestil Eye Manual Trolley is a low-profile, manual push trolley for positioning and supporting a hoist. It has a 1000 lb capacity and 2-1/2" headroom. It is made of steel for strength and durability and a painted finish. It has four rollers with sealed bearings for long life and a lifting eye for attaching the hoist. Once a hoist is attached the center rod cannot be rotated which prevents the trolley width from accidentally changing. This push trolley installs quickly on any S-type I-beam with a flange width of 2 to 8-5/8".