This is a 6.5 ft tall rocket made from two posterboards wound around three 6-inch dia wood embroidery hoops to form a body tube. The main 6-inch body tube is hollow. The Estes D-size engine is inside an old Estes mailing tube supported by four 24-inch long 0.25 inch dia wooden dowels at th top of the rocket. There is a parachute in the mailing tube. The entire rocket with engine weighs 13 ounces.