Verify Tube balance needed

A handy person from Texas says:
Greetings,

I think I need 400 Spiral Balance Product Code S400-27, but hope you can confirm.

Tube length is 27"
Tip is red
Diameter is 3/8

Pictures attached

Thank you very much,
Paul
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
I agree, Paul, our S400-27 looks like a good match. I would just confirm all your dimensions just in case.
A quick learner says:
are there any other tools you sell that I would need to order along with the tube balance?
Profile picture of Tom
Tom from SWISCO responded:
Sure! You might want to look at our 75-005 charging tool, which you may need for installation. Check out the guide below to see how it works.
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How to Identify a Replacement Spiral Balance
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