Six pack of the revolutionary MICRO MAXX model rocket engines. These little powerhouses are designed for backyard flying. Unique in their micro size, MICRO MAXX engines have big power in a micro size! They are the equivalent of 1/8 A in power and are powerful enough to propel a 4 gram micro rocket to 75 feet high! They have a three quarter second burn time followed by a half second delay, then ejection. This package includes six MICRO MAXX model rocket engines, six MMX-Q2 igniters and three igniter holders. These Micro engines and igniters are designed to be used with the 7702 MICRO MAXX LAUNCH System.