One pound of world championship rubber band string. Please specify 1/8: for airplanes such as the Lightning, Daredevil or for all the PropRacers. Order 3/16: if you need spare motors for the FunShuttles. The standard rubber for all Science Olympiad and TSA competition aircraft is .093 (3/32")
This is the official Great American Aero Derby competition Launch-It, which propels the aircraft to over 100' altitude. The Launch-It includes 50' of 1/8" rubber, kite string, a streamer, tent peg, instructions, and a Launch-It storage unit. Launches model gliders weighing between 50 and 150 grams.
