Heavy Duty 12 x 2.5 Scooters Replacement Inner Tube with CR202 Stem Compatible with 12.5 X 2.5 12.5 X 2.75 12.5 X 3.0 12 X 2.5 12 X 2.75 12 X 3.0 12 1/2 x 2 3/4 Most Bike/Scooter Tire Tube 2-Pack