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B6-4 model rocket engine. 3 pack
3 B6-4 ENGINES FOR MODEL ROCKETS Also included: 3 igniters and 4 plugs
24 Estes B6-4 rocket engines. Bulk Pack
Bulk Pack of 24 Rocket Engines Included: 24 B6-4 Rocket Engines 30 igniters 24 plugs 75 sheets of wadding