Spiral spring part number

A quick learner from USA says:
Hello, can I get a part number on a spriral spring 3/8 diameter and 36 inch long with a black cap?
User submitted photos of window hardware.
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Paul from SWISCO responded:
Thanks for posting! Just to confirm, you're measuring just the outer tube, correct? For your particular part, I recommend our our Series 900 spiral balance. These aren't made with Black Tips, so you will have to weigh your sash to confirm the correct color tip option.
A quick learner from illinois says:
OK i will weigh the window and order the correct balancer.

on the pivot bar picture do you sell the white holder block that it is pressed into?


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Tom from SWISCO responded:
The bottom pivot bar in your second picture looks closer to our 26-379. This has the pivot bar actually built into the white block, so the two aren't able to be separated. Would this be a better match?
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