Semroc Centering Ring Plywood ST-7 to ST-9 x 0.25" with Hook Cut(2pc Set) SEM-CR-7-9EHP
Plywood rings for centering an ST-7 motor tube inside an ST-9 tube
One ring includes the notch for the motor hook
Thickness 0.25"
ID= 0.759"
OD= 0.950"
Made in the USA