Out of Stock.
This is a standard paper centering ring for centering a BT-20 (18mm motor) tube in a BT-50 tube. This part is often used to create an 18mm motor mount for a BT-50 rocket. This is also used as a 24mm motor thrust ring or engine block.
- Length/Thickness: 0.25 inches (6.4 mm)
- Inner Diameter: 0.740 inches (18.8 mm)
- Outer Diameter: 0.945 inches (24.0 cm)
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