Product Description Specifications:Application:Gravel, CityETRTO:33-622 to 46-635Tyre Dimensions:28 x 1.3 to 28 x 1.8Inner Tube Material:butylValve Type:SV / Presta 48 mm, AV / Schrader 48 mm, DV / Dunlop 48 mmValve InformationTubes are available with various valve types. Choosing a valve is dependent on application and the rim's valve hole diameter.AV / Schrader Valve:Synonyms: Auto Valve (AV), Schrader ValveOuter Diameter: 8.5 mmSV / Presta Valve:Synonyms: Sclaverand Valve (SV), French Valve, Presta ValveOuter Diameter: 6.5 mmDV / Dunlop Valve:Synonyms: Blitz Valve, Normal Valve (NV)Outer Diameter: 8.5 mmModels:33-46 x 622-635 AV / Schrader 48 mmValve Type:AV (Auto / Schrader valve)Valve Length:48 mmManufacturer Number:33308333-46 x 622-635 SV / Presta 48 mmValve Type:SV (Sclaverand/Presta)Valve Length:48 mmManufacturer Number:33957733-46 x 622-635 Dunlop 48 mmValve Type:DV (Dunlop Valve)Valve Length:48 mmManufacturer Number:995335Contents:1 xManufacturer: Michelin Reifenwerke AG &Co. KGaA The Squaire 17 – Am Flughafen 60549 Frankfurt am Main Germany info@michelin.com