What model do I have

A contractor from Spring Hill, FL says:
I would like to ask what model I have and how I can get two sets. I have added the photos here.

Thank you.
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Tom from SWISCO responded:

Thanks for your patience during this busy season. Your pivot shoe resembles our 15-199, which is compatible with both the 3/8" thick Series 165 and 1/2" thick Series 160 coil springs. You need to measure the thickness of your original spring to confirm which one would be better.

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