Semroc Centering Ring Wound Craft Paper BTH-52(LT-115) to BT-55(1pk) SEM-CR-52H-55
Laser-cut rings for centering a BTH-52 motor tube inside a BT-55 tube
ID = 1.215"
OD = 1.283"
Thickness = 0.25"
Made in the USA
Perfect! Building a FSI Viking V from plans and wanted to fly it on 29mm motors. There isn't much room between the tubes so these worked perfectly!
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