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Estes 1606 - B6-4 Model Rocket Engines (3)
The Estes B6-4 engine is single stage engine designed for model rocket flight. This engine is a stan..
$8.03 $11.99
Estes 1783 - B6-4 Bulk Model Rocket Engines (24)
The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launchin..
$60.29 $89.99
Estes 1783 - B6-4 Bulk Model Rocket Engines (24)
The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launchin..
$60.29 $89.99
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