20/50 Long Centering Rings
Centers T-20 Tube into T-50 Tube also can be used as a 24mm Engine Block
Engine Hook - Estes E Size
Model Rocket Engine Hook - Estes E Size. Sized to fit the longer Estes E engines (note: our 20/50 Long Centering Rings can be used as a spacer to use a 2.75" 24mm engine in a mount using the longer hook).
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