These are not the E22 batch engines! The Estes C11-5 engine is for flights in rockets weighing less than 6 ounces, including the engines. Each package includes 2 engines, 2 starters and 4 starter plugs.

• 2-Pack
• C11-5 Model Rocket Engines
• Each package includes 2 engines, 2 starters and 4 starter plugs