Product Description Robust yet lightweight: Ultralight Tubes by Maxxis With a wall thickness of 0.60 mm, Maxxis Ultralight tubes are hardy enough for the toughest World Cup, yet they are only half the weight of standard tubes. The Maxxis Ultralight is also impressive in the road bike version and offers a robust and lightweight solution for your rim. Specifications:Application:Cross CountryETRTO: 50-584 to 60-584, 44-584 to 61-584 Tyre Dimensions:27.5x1.9-2.35Inner Tube Material:butylValve Type:SV / Presta 48 mm, AV / Schrader 48 mmModels:27.5 x 1.9-2.35 SV / Presta 48 mm Valve Type:SV (Sclaverand/Presta)Valve Length:48 mmManufacturer Number:2208 27.5 x 1.75-2.4 SV / Presta 48 mm Valve Type:SV (Sclaverand/Presta)Valve Length:48 mmManufacturer Number:2242 27.5 x 1.75-2.4 AV / Schrader 48 mm Valve Type:AV (Auto / Schrader valve)Valve Length:48 mmManufacturer Number:2243Valve 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 mmContents:1 x Maxxis Ultralight inner tube Manufacturer: Maxxis International 545 Old Peachtree Rd NW Suwanee GA 30024 USA info@maxxis.de Distributor: bikemarketing BMG GmbH Provinostr. 52 86153 Augsburg Germany contact@maxxistires.de