Parts for Rockets - Centering Rings - Fits BT-4 tube

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Semroc Centering Ring Wound Craft Paper BT-2 to BT-4(1pk) SEM-CR-2-4 *

MSRP:

Was:

Now: $0.29

Semroc Centering Ring Wound Craft Paper BT-2 to BT-4(1pk) SEM-CR-2-4 1 pack ID= 0.281" OD= 0.442" 1/…
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Semroc Centering Rings Fiber BT-4 to BT-20(2pk) SEM-RA-4-20*

MSRP:

Was:

Now: $0.89

Semroc Centering Rings Fiber BT-4 to BT-20(2pk) SEM-RA-4-20 Featherweight laser-cut fibe…
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Semroc Centering Rings Fiber BT-4 to BT-50(2pk) RA-4-50 *

MSRP:

Was:

Now: $1.19

Semroc Centering Rings Fiber BT-4 to BT-50(2pk) RA-4-50 2 pack ID= 0.45" OD= 0.948" 0.05" thic…
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Semroc Centering Ring Wound Craft Paper BT-4 to BT-5(1pk) SEM-CR-4-5 *

MSRP:

Was:

Now: $0.29

Semroc Centering Ring Wound Craft Paper BT-4 to BT-5(1pk) SEM-CR-4-5 1 pack ID= 0.449" OD…
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Semroc Centering Ring Wound Craft Paper BT-3 to BT-4(1pk) SEM-CR-3-4 *

MSRP:

Was:

Now: $0.29

Semroc Centering Ring Wound Craft Paper BT-3 to BT-4(1pk) SEM-CR-3-4 1 pack ID= 0.372" OD= 0.4…
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Semroc Centering Rings Fiber BT-2 to BT-4(2pk) RA-2-4 *

MSRP:

Was:

Now: $0.79

Semroc Centering Rings Fiber BT-2 to BT-4(2pk) RA-2-4 2 pack ID= 0.281" OD= 0.42" 0.05" thick …