The Bell high-quality standard inner tubes are constructed of mold-cured rubber for a consistent side-wall, which prevents high-pressure blow-outs. Available in a full range of major tube sizes. Fits wheel size 18" x 1.75 - 2.25". Valve Size/Type: 35mm Schrader. This tube works best for kids and BMX bike tires. Bell 18" Universal Inner Tube, 18BIKE - Bicycle Accessoriesories at Academy Sports
