Balance from Windowmaster single Hung window

I would like to order a pair of window balances for a Windowmaster double hung window. It is stamped 2440. I can't seem to find a top end that looks like the one on my balance on yours or any other website any assistance would be appreciated.

Thank you,

Doug

Thank you so much. That looks perfect except the top doesn't look the same. Will it still work?

Thank you!