These are not the E22 batch engines! The Estes D12-7 engine is a single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 8 ounces, including the engine. Each package includes 2 engines, 2 starters and 4 starter plugs.

SHIPPING INFORMATION:

Rocket Engines will be shipped ground UPS 2 - 5 day service at no extra charge.

Estes model rocketry is recommended for ages 10 and up with adult supervision for those under 12. Unless otherwise specified, all models require assembly. Tools, construction and finishing supplies sold separately. In order to launch, a launch system, model rocket engines, starters and recovery wadding are required - sold separately-unless otherwise specified.