SCHWALBE Inner Tube 40mm Schrader / Car / Auto AV1 45 BENTThis listing is for one quality inner tube, adjust quantity if you need more than one. 100% Rubber Quality Inner Tube Long life air retention High Puncture Resistance 40mm long quality precision made valves Valve Cap and Lock Nut Conveniently packed for FREE LETTERBOX DELIVERY! Suitable for tyre size: 12" x 2.25 Valve: Schrader / Car / Auto What special features does a Schwalbe tube offer? Besides the quality of the ingredients, the purity of the rubber compound is decisive for the quality of the tube. Before extrusion, the basic material is forced through a total of seven filters under enormous pressure. All tubes are inserted and inflated into a mold for the vulcanization process. Only this ensures an even .