This is a pack of three Estes B6-4 Model Rocket Engines. The Estes B6-4 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than four ounces, including the engine. Each package includes three engines, three igniters and four igniter plugs.

Specifications:

• Engine Type: B6-4
• Total Impulse (N-sec): 5.0
• Time Delay (Sec): 4
• Maximum Lift Wt. (Oz/g): 4.0/113
• Maximum Thrust (Newtons/Lbs): 12.1/2.7
• Thrust Duration (Sec): 0.8
• Initial Weight (Oz/g): 0.71/20.1
• Propellant Weight (Oz/g): 0.22/6.24