Actually, depending on what attachments you have, your original measurement may be more accurate. However, before we can confirm, I just need a little bit more information about your shoe.
Upon closer examination, I see that it has a clip sticking from the bottom of it, which means that it is different than the examples I posted above. If at all possible, can you please take a picture of the underside of the shoe? We will need to confirm whether or not it has a wheel inside of it. We will also need to know its height, in inches, so that we can identify an applicable replacement. Thank you for your cooperation!
Yes the metal channel itself has 31 4 stamped on the back as well as the letters B.S.I. and VP on it. The bottom shoe we discussed previously also has a light stamping that reads "PAT 659826"
Thank you for getting back to us James. We can supply the needed replacement balances, I will email you a custom ordering link shortly.