Sawhorse supports sheet lumber and table tops up to 4-foot by 4-foot and collapses to 6-inch by 9-inchThis is the 4' x 4' modelIncludes 4 x-cups, 4 quick Clamps and a carry/storage bag3,500lb (1,587kg) capacity!Multiple steel struts move in tandem for easy setup and take downSupports thin materials without sagging