Pirelli P Zero SmarTube EVO Tube - 700 x 25 - 28mm 42mm Presta Valve Model-Peak DX II and T10 and T25 Torx-compatible

and T10 and T25 Torx-compatible

The rolling resistance of the slow wheels is increased using our patented ISR (internal speed reducer) that weighs only 10 grams

Service version is especially good on dirty and

Extra-hard steel means you can skate for up to 5 years without sharpening your blades

These rings will allow you to convert your 120 BCD crankset

Pirelli P Zero SmarTube EVO Tube - 700 x 25 - 28mm 42mm Presta Valve Model-Peak DX II and T10 and T25 Torx-compatible5% faster than Previous SmarTUBE 70% weight savings compared to conventional tubes 50% smaller than conventional tubes 42mm valve stem = 35 grams Not for use with rim brakes Not designed to be repaired Constructed of Thermoplastic Polyurethane TECH SPECS Shaft Type Non threaded Tube Weight 35g Valve Length 42mm Tube Width 25 28C Valve Presta Wheel Diameter 700C