MOOVMOOV 20x4 Inner Tube with Schrader Straight Valve (x2) - Compatible with Fat Bike/Mountain Bike/Electric Bikes - Tube for Fat Tires - for 20-Inch Tire - ETRTO 100-406The 20x4 inner tubes in your kit are specially designed for Fat Bikes and are compatible with many other types of bikes, such as mountain bikes, folding bikes, electric bikes, etc ..

MOOVMOOV 26x4 Inner Tube with Straight Schrader Valve (x2) - Compatible with Fat Bike & Mountain Bike/Mountain Bike/Electric Bikes, Others - Heavy Duty - for 26 Inch Fat Bike TiresTHESE 26-INCH STRAIGHT VALVE INNER TUBES CAN BE EASILY INSTALLED ON FATBIKES, MOUNTAIN BIKES, ELECTRIC BIKES, (IN 26x4.00 TIRES) WITHOUT WORRY.Features of MOOVMOOV 26x4 I..