Product Description For hard freeride and light downhill with 1.2 mm wall thickness. With just under 300 g in the middleweight class. Specifications:Application:Freeride, DownhillETRTO: 57-584 - 64-584 Tyre Dimensions:27.5 x 2.2 - 2.5"Inner Tube Material:butylValve Type:AV / Schrader 36 mm, SV / Presta 36 mm, SV / Presta 48 mmModels: 27.5x2.2-2.5 AV / Schrader 36 mm Valve Type:AV (Auto / Schrader valve)Valve Length:36 mmManufacturer Number:2353 27.5x2.2-2.5 SV / Presta 36 mm Valve Type:SV (Sclaverand/Presta)Valve Length:36 mmManufacturer Number:2352 27.5x2.2-2.5 SV / Presta 48 mm Valve Type:SV (Sclaverand/Presta)Valve Length:48 mmManufacturer Number:2354Valve 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 mmMax. Pressure: 10 bar SV / Presta Valve: Synonyms: Sclaverand Valve (SV), French Valve, Presta ValveOuter Diameter: 6.5 mmMax. Pressure: 15 barContents:1 x Maxxis Freeride/Downhill Light inner tube Weight: black | Presta Valve (SV) | 57-584 to 64-584 | 27.5x2.2-2.5 Presta 48 mm | 48 mm: 307 g 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