New pivot shoes and support piece

A quick learner from New Jersey says:
Hi, I'm in need of buying two replacement shoes for a few of my windows. But I don't know which one to buy. Can you help me in finding out what size this is?
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Lauren from SWISCO responded:

Hello, thank you for posting,

Your balance assembly resembles the 15-180 pivot shoe that is compatible with the Series 190 coil springs. Please review the overall dimensions to confirm a good fit! Let us know what you think and if you have any additional questions. 

Alternate image for 15-180
Alternate image for 15-180

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