Estes Rocket motors B4-4 Pk3

Estes Rocket motors B4-4 Pk3

The Estes B4-4 engine is single stage engine designed for model rocket flight.

This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine.

Each package includes 3 engines, 3 igniters and 4 igniter plugs.