A three pack of 8" Firstfire Mini™ model rocket motor igniters are manufactured with a smaller diameter wire than the FirstFire Jr™ igniters, allowing them to fit a wider range of motors, particularly those with small throats. The FirstFire Mini™ igniters offer the same reliability that customers have enjoyed with the other igniters in the FirstFire line. FirstFire Mini™ igniters work on both 9V and 12V launch systems.
The igniter has a smaller tip and is best for the following motors
Composite S/U -D10, D21, E15, E20, F26, F27
Composite Reloads - D9, D13, D15, D24, E11, F12