Rear Inner Tube Compatible with Razor MX500 & Razor MX650 Dirt Bike

Rear Inner Tube Compatible with Razor MX500 & Razor MX650 Dirt Bike2.50/2.75-10 (80/90-10) 10" Heavy Duty Mini Dirt Bike Inner Tube - 2 mm Reinforced Thickness - TR4 Valve Stem Straight?? Specificatio...