This CR geared trolley with a W30 extension fits a 12-inch beam flange. It features an eight-foot chain and a load capacity of 0.5 tons. It has a 60-millimetre wheel diameter, a 1,300-millimetre minimum radius curve, and is 20 inches head room to shaft and 110 inches head room to bail. This trolley includes heat-treated steel wheels, lifetime lubricated ball bearings, and adjustable safety lugs.