3950-01-251-9652 INC 19208 CANCELLED/REPLACED BY ,INC 50907, FIIG A519L0, APP-KEY , ON 101194 A manually operated mechanical device consisting of 2 sides, 2 or more wheels, axles and bearings fastened together by an equalizing pin. It shall be designed to permit adjustment to various size American or British Standard I-beams, primarily for suspension of chain hoists or wire rope hoists by means of hooks, eyes, pins and the like. Excludes TROLLEY, MONORAIL.