Designed better than any other tube around,,Its a KENDA!
This is for a 4 inch rim! Not the new hub motors with a 10 inch tire!
Our high quality kenda 3.50-4--3.00-4 inner tubes are manufactured with extra rubber making them more puncture resistant and have a TR-87 bent valve stem.
It will fit tires labeled "3.00-4" and "3.50-4"
If your wanting a top quality tube that actually last then this is the tube for you and we only use Kenda on our scooters (true story not just trying to make a sale) ..