French/Presta valve stem, high quality lightweight butyl inner-tubes, prefilled with Joe’s Road Racing Sealant, The world’s most effective anti-puncture sealant! Specially engineered to seal punctures at the high air pressures of road racing wheels. Instantly seals punctures in the tread up to 3mm. Available in superlight weight tubes.
Rated 5 out of 5 by Anonymous Safety over the cobbles
These tubes helped through 170 with 52km of cobbles at the 2013 Paris Roubaix Challenge. Saw many participant who changed tubes , they should have choosen No Flats self sealing tubes.
Used these with Specialized Roubaix Elite Armadisllo's 23/25 tires - NO FLATS!!!
5 out of 5 for safety over the cobbles.
12 April 2013
Rated 1 out of 5 by Anonymous NO GOOD
I PUMPED IT TO 110PSI AND IT BURST THERE AND THEN, WITH MY PREVIOUS TYRE IT WOULD GO TO 120PSI AND HOLD, AS THAT IS THE WHAT IT STATES ON THE SIDE WALL AS THE MAX PSI OF MY TYRE.
13 January 2011