Manage heavy loads using straight or curved I-beam track. Excellent for industrial use, warehouse, garage and maintenance.Weight capacity:2000 lbs. Minimum curved track radius: 3 ft. 3" I-beam flange width:2-11/16" to 5-1/8" Wheel dimensions: 2-3/4" diameter with 3/8" wall Trolley dimensions: 8-7/8" L x 4-7/8" W x 6-3/8" H Weight: 21.10 lbs.