Pirelli Angel SmarTube X Tube - 700 x 28 - 42mm 42mm Schrader Valve ModelNumber=H2900 A pair of dual-lip seals

A pair of dual-lip seals ride in micro-grooves to keep out water and debris

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100% acrylic

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Pirelli Angel SmarTube X Tube - 700 x 28 - 42mm 42mm Schrader Valve ModelNumber=H2900 A pair of dual-lip seals70% weight savings compared to conventional tubes 50% smaller than conventional tubes 3x thicker than standard SmarTUBES Not for use with rim brakes Not designed to be repaired Constructed of Thermoplastic Polyurethane TECH SPECS Valve Schrader Shaft Type Non threaded Tube Width 28 42C Tube Weight 151g Valve Length 42mm Wheel Diameter 700C