Sorry the link would not open. That may not be allowed here on the forum. But that sounds exactly like it, Milo. I hope you will find it helpful. I also have some that are made of metal that I bought used on Ebay.... and they are both helpful with balance. Honestly, I can tell little difference between the metal ones (that are much more expensive if you go through a medical equipment place) and the ones I purchased on Amazon. Your mileage may vary. Please let us know what you think when you have tried it. Best regards!! Mike