Semroc Centering Ring Fiber ST-7 to ST-10 with Engine Hook Notch(1pk) SEM-CR-710E
Spiral Wound Paper rings for centering an ST-7 motor tube inside an ST-10 tube with cut out on one ring for the engine hook
ID = 0.759"
OD = 1.0"
Thickness = 0.05"
Made in the USA