I bought two of these for a wheelchair scooter. The scooter manufacturer charged hundreds of dollars for 2 of these. There are claims that they don't work for scooters. You are wrong. Perfect fit and she dances around like new. Sometimes you just have to be innovative. Size matters and they are exactly as specified by the scooter manufacturer. Take a close look at the rims of your scooter. It's probably a removable disk. But the scooter manufacturer wants you to buy tires and wheels for a lot of money. In any case, they work great. Well done. The product is exactly as advertised and works as expected. I will buy it again.