More than just a spare: Designed to fit in even the smallest of pockets, the 35 gram S-Tubo-CX/Gravel-All is the ideal spare tube for all 700c and 650B tires from 32 mm - 50 mm thanks to its small pack size. Equipped with the same robustness as standard inner tubes, it is not only a reliable savior in an emergency, but can also be used without hesitation in everyday use. The S-Tubo-CX/Gravel-All is also unaffected by any residue of tubeless milk in the tire. Its very low rolling resistance values also make it a trump card in competition. Available with 42 mm (35 grams) and 60 mm (36 grams) Sclaverand valves in black and orange, approved for disc brakes.