Product Description For hard freeride and light downhill with 1.2 mm wall thickness. At just under 300 g, it's in the mid-weight class. Specifications: Application: Freeride, Downhill ETRTO: 57-584 - 64-584 Tyre Dimensions: 27.5 x 2.2 - 2.5" Inner Tube Material: butyl Valve Type: AV / Schrader 36 mm, SV / Presta 36 mm, SV / Presta 48 mm Models: 27.5x2.2-2.5 AV / Schrader 36 mm Valve Type: AV (Auto / Schrader valve) Valve Length: 36 mm Manufacturer Number: 2353 27.5x2.2-2.5 SV / Presta 36 mm Valve Type: SV (Sclaverand/Presta) Valve Length: 36 mm Manufacturer Number: 2352 27.5x2.2-2.5 SV / Presta 48 mm Valve Type: SV (Sclaverand/Presta) Valve Length: 48 mm Manufacturer Number: 2354 Valve Information Tubes are available with various valve types. Choosing a valve depends on the application and the rim's valve hole diameter. AV / Schrader Valve: Synonyms: Auto Valve (AV), Schrader Valve Outer Diameter: 8.5 mm Max. Pressure: 10 bar SV / Presta Valve: Synonyms: Sclaverand Valve (SV), French Valve, Presta Valve Outer Diameter: 6.5 mm Max. Pressure: 15 bar Contents: 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