Manual Trolleys provide a convenient means to suspend chain hoists from an overhead beam and provide horizontal travel. These trolleys feature 5:1 design factor allows use with manual & powered hoists, cast iron universal tread wheels enable use on flat or tapered flange beams and wheels run on sealed ball bearings. Manual trolleys are adjustable to fit a wide range of beam profiles and designed to adjust the width of the I-beam using manual screw mechanism.