Product Description Specifications:Application:KidsETRTO:33-288 to 46-305Tyre Dimensions:14 x 1.3 to 16 x 1.8"Inner Tube Material:butylValve Type:SV / Presta 40 mm, AV / Schrader 40 mmValve InformationTubes are available with various valve types. Choosing a valve is dependent on application and the rim's valve hole diameter. SV / Presta Valve: Synonyms: Sclaverand Valve (SV), French Valve, Presta ValveOuter Diameter: 6.5 mm AV / Schrader Valve: Synonyms: Auto Valve (AV), Schrader ValveOuter Diameter: 8.5 mmModels:14-16 x 1.3-1.8 SV / Presta 40 mm Valve Type:SV (Sclaverand/Presta)Valve Length:40 mmManufacturer Number:791650 14-16 x 1.3-1.8 AV / Schrader 34 mm Valve Type:AV (Auto / Schrader valve)Valve Length:34 mmManufacturer Number:755831Contents:1 x Michelin I3 Airstop inner tube for 14 - 16" Weight: universal | Schrader Valve (AV) | 33-288 to 46-305 | 14-16 x 1.3-1.8 AV 34 mm | 34 mm: 105 g universal | Presta Valve (SV) | 33-288 to 46-305 | 14-16 x 1.3-1.8 SV 40 mm | 40 mm: 102 g Manufacturer: Michelin Reifenwerke AG &Co. KGaA The Squaire 17 – Am Flughafen 60549 Frankfurt am Main Germany info@michelin.com