22*2.0mm Aluminum tube.Payload capacity: 75KgsBalloon Wheels: 30cm dia. x 18 cm Weight:6.0/7.0kgscarton size:92x45x20cmCrossbar to Ground: 31cmWidth at Axle: 71cmAluminum frame with stainless steel hardware 2 30cm balloon wheels 2Including 1pc Cam Buckle Tie-Down Straps. 3.6m