The Mega-Truss Dolly easily holds truss for transport or storage. The 5 inch aluminum C channel has CNC milled cutouts for truss to ride in. It is important to secure the trusses tightly to the Mega-Truss Dolly with an E-Clip ratchet strap before moving. The two 4"ÌÑ 2" heavy duty castors are rated for 480 pounds each. A pair of Mega-Truss Dollies will carry up to 1900 total pounds of truss. Mega-Truss Dollies are available in a variety of sizes, with additional sizes available upon request. Dollies are sold as a set (pair)E-Clip ratchet straps are available and are sold separately. Each strap is 16‰Ûª in length. Since truss dollies are sold as a pair, you will need to purchase 2 E-straps for each set of dollies.Part Number: 06-09-15-MTDESTRAPWorking Load Limit960 Pounds per dollyHardwareEncore 4" ÌÑ 2" 480# rated casters each secured with 4 each 3/8" ÌÑ 3/4" grade 5 Hex head cap screws and serrated hex flange nuts.DimensionsU Channel is 5"W x 2.5"T x 1/2" WallWeightAvg. 26 pounds each pair