Product Description High quality bicycle tubes with 0.80 mm wall thickness. The standard inner tube for XC, Freeride, 4X, BMX, Trekking, City and Race. Specifications:Application:Road, City & TouringETRTO: 50-584 - 64-584 Tyre Dimensions:27.5 x 1.9" - 27.5 x 2.5"Inner Tube Material:butylValve Type:AV / Schrader 36 mm, SV / Presta 36 mm, SV / Presta 48 mmModels:27.5x1.9-2.35 SV / Presta 36 mm Valve Type:SV (Sclaverand/Presta)Valve Length:36 mmManufacturer Number:2305 27.5x1.9-2.35 SV / Presta 48 mm Valve Type:SV (Sclaverand/Presta)Valve Length:48 mmManufacturer Number:2306 27.5x2.2-2.5 AV / Schrader 36 mm Valve Type:AV (Auto / Schrader valve)Valve Length:36 mmManufacturer Number:2309 27.5x2.2-2.5 SV / Presta 36 mm Valve Type:SV (Sclaverand/Presta)Valve Length:36 mmManufacturer Number:2308Valve 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 mm SV / Presta Valve: Synonyms: Sclaverand Valve (SV), French Valve, Presta ValveOuter Diameter: 6.5 mmContents:1 x Maxxis Welterweight inner tube Weight: black | Presta Valve (SV) | 50-584 to 64-584 | 27.5x1.9-2.35 Presta | 36 mm: 191 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