Spiral balance Red Tip

Thanks for posting! You tilt window spiral balance looks like it could either be the 3/8" Series 900 or the 5/8" Series 600 Spiral Balances with a red tip. To determine which of these is the correct series for your replacement, you'll need to confirm the length of the metal tube (not including the tip) and the diameter of the balance, which will be either 3/8" or 5/8".

Once you've confirmed this information, you'll be able to select the balance you need from the list of balances from the list in the link above for your respective series. They are listed by length.