"This Ingersoll Rand plain push trolley only requires a force equal to one per cent of the total rolling weight when moving loads. U.S.A. Capacity lbs. 2,000, Works With Manual or powered hoists, Flange Width in. 3-8 1/16, Includes Trolley, Material Type Steel, Ratio 51. Universal wheels can be used with manual or powered hoists Fits both flat and tapered beams Wheels run on sealed ball bearings that mean smoother rolling with less effort Side plates made with cold-formed steel for strength 51 design factor Meets ASME/ANSI and CMAA standards"
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