The SporTUBE is the most classic cycling inner butyl tube range. A complete range with the size and specification for every kind of cyclist and discipline, from road cycling mountain biking to urban commuting. 48mm Presta valve, suitable for bikes with disc and rim brakes.Weight: 700x23-30 - 120g, 700x32-40 - 150g, 700x42-50 - 160g
