Custom build and decorate your own 19" rocket with the Explorer X-19 model rocket kit. SureFire Rockets has brought a new concept of educational rocket building to educators. The Explorer X-19 is the second in a line of rockets that gives the student control over both the look and design of his/her rocket. The Explorer does not include instructions or cut rocket fins. You print the instructions and the fin designs from this page. There are currently 4 different fin designs to choose from with more to come! By eliminating many of the high cost associated with producing rockets SureFire Rockets is able to bring you this educational bulk pack for significantly less than any other educational kit on the market. The Explorer X-19 rocket is a Skill Level 1 rocket (ages 8 and up) and flies on standard A-class, B-class, and C-class model rocket engines.