Cm Series 633 Universal Trolleys - 2000-Lb. CapacityFits flat- or tapered-flange beams. CM Series 633 Universal Wide Flange Trolley features superior rolling efficiency normally found in expensive roller bearing trolleys. Rugged steel side plates include bumpers and trolley guards. Universal tread flanged trackwheels are equipped with shielded ball bearings. Hardened wheels and axles. Product Specifications LENGTH INCHES10-3/4 WIDTH INCHES13-1/2 CAPACITY LBS2000 BEAM WIDTH INCHES3 to 8 BRANDColumbus Mckinnon MANUFACTURERS PART NUMBER3304 PACKAGE QUANTITY1 TYPEUniversalOne?Ö BEAM HEIGHT INCHES5 - 24