Replacing older pivot shoes

A quick learner from PA says:
My older broken pivot shoes are different (see pic) but match dimensions on this 1/2inch one. I have the series 600 spiral balances. Just wondering if you think these will work about the same?
Thanks.
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Tom from SWISCO responded:

Hello! As long as your old shoe is precisely 1/2" thick, then our 15-046 should work for you. Just make sure it's not 17/32", though. If it is, then you want our 15-015 instead.

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