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Centering Ring - centers a 09mm(BT3) tube into a BT5 Body Tube
Fits Estes BT5 body tubes
This centering ring is also used as a 13mm engine block in 13mm(BT5) engine tubes.
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$ 0.20
Available: 73
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Centering Ring - centers a 13mm(BT5) tube into a BT20 Body Tube
Fits Estes BT20 body tubes
This centering ring is also used as a 18mm engine block in 18mm(BT20) engine tubes.
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$ 0.20
Available: 94
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Centering Ring - centers a 13mm(BT5) tube into a BT50 Body Tube - 10 pack
Fits Estes BT50 body tubes
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$ 2.50
Available: 4
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Centering Ring - centers a 18mm(BT20) tube into a BT50 Body Tube
Fits Estes BT50 body tubes
This centering ring is also used as a 24mm engine block in 24mm(BT50) engine tubes.
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$ 0.20
Available: 69
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Centering Ring - centers a 18mm(BT20) tube into a BT55 Body Tube - 10 pack
Fits Estes BT55 body tubes
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$ 2.50
Available: 7
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Centering Ring - centers a 18mm(BT20) tube into a BT56 Body Tube
Fits Estes BT56 body tubes
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$ 0.25
Available: 17
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Centering Ring - centers a 18mm(BT20) tube into a BT60 Body Tube - 8 pack
Fits Estes BT60 body tubes
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$ 2.50
Available: 6
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Centering Ring - centers a 24mm(BT50) tube into a BT55 Body Tube - 10 pack
Fits Estes BT55 body tubes. Use this centering ring to upgrade the power on any BT55 size standard engine model rocket kit to 24mm engine power!
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$ 2.79
Available: 2
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Centering Ring - centers a 24mm(BT50) tube into a BT56 Body Tube - 10 pack
Fits Estes BT56 body tubes. Use this centering ring to upgrade the power on any BT56 size standard engine model rocket kit to 24mm engine power!
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$ 2.79
Available: 3
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Centering Ring - centers a 24mm(BT50) tube into a BT60 Body Tube - 8 pack
Fits Estes BT60 body tubes
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$ 2.50
Available: 6
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