56mm (BT-70) Body Tubes
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29mm Heavy Wall - 56mm (BT-70) Centering Rings (2)
Rocketry Works
$1.99These laser cut centering rings are made from 1/8 inch birch plywood, and sized to mount Aerotech's 29mm heavy wall motor tube in a 56mm (BT-70) airframe tube. The fit on the motor tube is tight, so some light sanding may be needed. Sold as a set of 2...RW-CR-29MM HW / BT-70 PW 1/8 IN$1.99