Need (4) 27" No-tilt Window Balance, stamped 2640

A handy person from Downey, CA says:
I need to replace (4) 1/2" Wide Channel Balances with a length of 27". The stamped number is 2640 but I'm unsure on the attached endpoints.
A handy person from Downey, CA says:
Some more closeup photos
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Bob from SWISCO responded:

Thanks for contacting SWISCO. Take a look at our S385-27 with a stamp option of 2640. Just compare the specifications on the product page with your old parts just to be sure.

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