24" red tip balancer

Hello there. This looks like a spiral balance for a tilt window. If the outer tube is 3/8" diameter, then you have a S900-24 with a Red Tip. If it's 5/8", you have an S600-24 with a Red Tip. As far as pivot shoes that the spiral rod attaches to, there are many different kinds that can work with these balances. Check the old ones. If they seem in disrepair, remove an old one and send us photos, and also tell us the width and thickness. We should be able to narrow it down from there. 

Thanks for getting back to me. Judging from the dimensions, start by looking at the 15-046. See if this pivot shoe matches what you seek.

Alternate image for 15-046