The SporTube is the most classic cycling butyl inner tube; the standard interpretation of the most-used air retention system in the world. A complete range offers the size and specification for every kind of cyclist and discipline, from road cycling to urban commuting.Butyl constructionDisc and rim brake compatibleBlack valve stemItem SpecificationsISO Diameter584 / 650b / 27.5"ISO Width (mm)63ISO Width (mm)64ISO Width (mm)65ISO Width (mm)66ISO Width (mm)67ISO Width (mm)68ISO Width (mm)69ISO Width (mm)70ISO Width (mm)71Labeled Size27.5 x 2.5 - 2.8Shaft TypeThreadedTube CompoundButylValve CoreFixedValvePresta Med 41-55mmWeight300 Pirelli SporTube Tube Tubes EAN: 8019227370331