The Estes 16521 C11-0 Engine for Model Rockets is a booster stage engine designed for model rocket flight. Booster engines contain no delay or ejection charge. Engine is C11/D size (2.75" long x .95" diameter). Each package includes 2 engines, 2 igniters and 4 igniter plugs.
ATTENTION: Residents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions on model rockets.
ATTENTION: Estes products may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm