Spiral balance replacement need 4 each

A quick learner from VERO beach, Fla says:
My spiral balance on two windows are broken. A pin at top of spiral broke. Tubes are 29 x 1/2 inch with a single pin on bottom with single hole under it.
Can you help with suggestion to purchase replacement?
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A quick learner from VERO beach, Fla says:
The diameter is 9/16 which I saw a Video on your web site saying this is actually identified as 5/8 inch.
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Casey from SWISCO responded:

Hello,

Your balance and dimensions indicate that you would need the 5/8" diameter S500-29 spiral balance for non-tilt windows. Please note that you will need to weigh your window sash and follow the chart under the balance product description to choose the corresponding tip color. Thanks for posting! 

How to Identify a Replacement Spiral Balance
How to Identify a Replacement Spiral Balance
VIDEO
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How to choose the proper spiral balance tip color
How to choose the proper spiral balance tip color
GUIDE
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How to adjust a spiral balance on a non-tilt window
How to adjust a spiral balance on a non-tilt window
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