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 mtb cycling to urban commuting
 
Butyl construction
Removeable presta valve core
Disc and rim brake compatible
Black valve stem
ISO Diameter: 559/584, 26"/275"
Labeled Size: choose 26" / 27.5"x2.1/2.4"
Shaft Type: Smooth
Valve: 48mm Presta
Valve Core: Removable
Weight: 215g.