Channel Balances

Thanks
Good Morning,
I am trying to find a channel balance,
it measuese 27" long, marking of 2640 on the channel, 1/2" wide. I have attached the bottom and the top is missing, or can not find.
I sure could use some help on this, would like to order new balances. Please let me know if I need to get more information for you.
Thanks for all your help.
Mike
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Hello, Mike. I recognize this top fitting, but this isn't enough for me to identify everything else you need. This top fitting has a particular style unique to "extended travel" channel balances, which have to be custom ordered. They come in a huge variety there are only slight differences between them, so in order to narrow that down I will require you to send me more photos.
First, it's important that the balance you show us is whole and undamaged. Like I said these differences are slight, so if anything is broken off or missing then there's a good chance we'll overlook something important. Custom balances cannot be returned for a refund if anything is wrong so I'd like to avoid this.
With that out of the way, please show me a clear picture of the bottom nylon fitting from both a side angle and underside, so that I can see the pulley wheel. I would also like a clear picture of the metal hook at the end of the cord.
Finally, please tell me how many you were interested in purchasing.