PECA1005.C-L PECK-POLYMERS FREE FLIGHT AIRPLANES Peck-Polymers offers high-quality contest and sport rubber band-powered aircraft. Among their ""Peanut Scale contest model kits are the 13 span Piper J3 Cub, 13 span P-51 Mustang, 13 span Zero, and 13'' span Lacey M-10. Several sport aircraft are also available, such as the Peck R.O.G., an excellent first rubber-powered model that's easy to build and will launch off the ground.