ESTES COX CORP-Estes: Flying Model Rocket Kit. Estes offers model rockets and rocket kits in a variety of sizes, shapes, colors and skill levels. Enjoy the fun of building a model rocket and the excitement of launching it into the sky! This package contains one Patriarch model rocket kit. Some assembly required, skill level RTF. Needed to fly but not included are engines, igniters, plugs, recovery wadding, and a launch system. Recommended for ages 10 and up.