what size is inside diameter?

A quick learner says:
for 9 LB SERIES 152 COIL BALANCE, what size is inside diameter (big than 3/4")? what size is outside diameter? Is it fit my coil bushing? see my photo blew. I need inside diameter > 3/4".
Thanks.
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Tom from SWISCO responded:

This isn't typically the best way to confirm what coil spring you need. The diameter of a coil spring is always changing since it's always going to spool and unspool as you open and close the window. 

Instead, can you show me a picture of your pivot shoe? If I can see your pivot shoe out of the window, I can 100% confirm what coil spring will work for you.

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