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Just completed our first mid-power rocket build that was purchased through Pavel's website. Everything was clear and to the point making for a very...Read More ->
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6 Engine Blocks for Standard Engines. Fits BT-20 (18mm) Tube. Engine Block or Thrust Ring is used to position the engine in the engine tube.
- 13.84mm, - 17.88mm, 6.35mm, 0.5g
