The Bell high-quality standard inner tubes are constructed of mold-cured rubber for a consistent side-wall, this will prevent high-pressure blow-outs. It's available in a full range of major tube sizes. Fits wheel size 20" x 1.75 - 2.25". Valve type & length: Schrader; 35mm with cap. Works best with kids and BMX tires. Bell 20" Universal Inner Tube, 20BIKE - Bicycle Accessoriesories at Academy Sports
