Moose Racing Heavy-Duty Inner Tube 3.00/3.50-16
These tubes are often replacement for 20x 4 Bicycle tubes as they are thicker to withstand flats.
Moose 16" Heavy Duty Inner Tube w/TR-6 Center Metal Valve Stem (3.00-3.50)
Fits Tire Size: 3.00-3.50
Heavy-duty tubes made specially for off-road and motocross
German made, these are the sturdiest, highest quality tubes on the market
3mm thick natural rubber construction helps resist pinch flats