What pivot shoe do I need?

A home owner from Minnesota says:
June 15, 2020
I figured out all of the rest of the parts I need (spiral balancers, tool, pivot bars (Spectus 26-357) but the pivot shoe has me confused. It is approx 2" tall, 1-1/4 wide and measures .560 deep. It has a black cam. Windows are older Wellington out of Minnesota. The thickness falls between the 17/32 and the 9/16. Should I just order a couple of each to be sure ? 15-015 or 15-118
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Tom from SWISCO responded:
June 18, 2020

I personally think a 9/16" option would be a better match for your old pivot shoe, but I can't say for sure. Buying both may be a good idea for peace of mind. You can see our return policy here.
Pivot Bar, Spectus
Pivot Bar, Spectus
26-357
$2.97
Pivot Shoe, 17/32" Thick
Pivot Shoe, 17/32" Thick
15-015
$1.55
Pivot Shoe, 9/16" Thick
Pivot Shoe, 9/16" Thick
15-118
$2.20
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