Estes 13mm 1/2A3-4T Engines (4 Pk) 1504
Estes mini engines are used to launch smaller, lighter model rockets. You’ll be surprised how high the 1/2A3-4T engine will propel your rockets!
The Estes 1/2A3-4T engine is single stage engine designed for model rocket flight. This engine is a mini engine designed for flights in lightweight rockets. Each package includes 4 engines, 4 igniters and 4 igniter plug