These are Brand New, in the box, Harrington 1 Ton Push Type Trolleys. They are a Model PT2010 Trolley and have the standard flange adjustment of 2.28" to 5.00" and are Hook Mount Style
Special Contour Wheels: Whether the installation is to be made on tapered I-Beam or flat-flange beams, the contour of the wheels of the Harrington PT Trolley makes perfect contact.
Pivot Mounted: The central shaft is pivot-mounted to assure smooth travel of the load. As the trolley travels along the beams, the wheels and side plates are free to pivot on the central shaft as the encounter irregularities such as welded joints on the beam surfaces. It maintains even loads on all four trolley wheels.
Ball Bearings: Sealed ball bearings are used in all trolley wheels for operating ease and are maintenance free.
Trolley Width Adjustment: Harrington trolleys are easily adjustable to fit a variety of beams.
