Pirelli Cinturato SmarTube X Tube - 700 x 40 - 50mm 60mm Presta Valve MFPN=CK23ERA136ARM165P872 Prevents punctures

Prevents punctures

dual pivot caliper brake designed for bigger tires

8 Color Silver Defined Color Silver Length 38 Material Alloy S

LAST - 100 Racing Fit: Performance last for maximum foothold and precision

Reinforced underside X pattern gives extra stiffness

Pirelli Cinturato SmarTube X Tube - 700 x 40 - 50mm 60mm Presta Valve MFPN=CK23ERA136ARM165P872 Prevents punctures70% 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 Weighs just 150 grams TECH SPECS Tube Weight 151g Tube Width 40 50C Valve Presta Valve Length 42mm Wheel Diameter 700C Shaft Type Non threaded