1 flat each yesterday and today... on different bike. Both of them were tubeless so the big 1/4" gash did seal up... but did cost me 3 co2 cartridges... bleh... Patched my regular commuter rig today so I will ride that tomorrow... and patch the other one tomorrow... (Big enough where I prefer taking it off and patching it, however, it still is holding air fine). Both times... I saw patch of road with glittering... construction debris in 30 mile apart locations... Erg... Why shrapnel on freshly paved road!!!!