Vintage Quantaray 7 Element Auto Tele Converter 2x for N/AI /Camera/Repair/Parts

Description

You are bidding on a vintage camera part . Quantaray 7 element auto tele converter 2x MC for M/AI.
Made in Japan.   Outside diameter 2 1/4 inches. I do not see any scratches on the lens.
I know nothing about cameras , so I am listing this for parts or repair since I cannot test it.
Comes with case , but the zipper is coming off and needs repair.
THANK YOU FOR LOOKING !!!