Semroc Centering Rings Fiber ST-7 to ST-16(BT-60)(2rings, 1 with Engine Hook Slot) SEM-CR-716EH
Featherweight laser-cut fiber rings which center a ST-7 motor tube inside a ST-16 series tube
Especially useful for making a standard engine mount for ST-16(BT-60) rocket bodies
One ring has an engine hook slots
ID = 0.759"
OD = 1.6"
Thickness = 0.05"
Made in the USA
Warranty for 1 year from manufacturer defects
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Engine mount rings
Thicker then Estes version, trust these a lottle better for low powered. Great price
