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Model Rocket Parts & Building Materials
Model Rocket Centering Rings
Model Rocket Centering Rings and Engine Blocks (Spiral Wound Paper)
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5/20 Centering Rings
Model Rocket Centering Rings. Centers T-5 Tube into T-20 Tube.
Also can be used as a T-20 (18mm) Engine Block.
Use two or more to center most tubes. The base price is for