The ergolight tyre levers are the lightest tyre levers in the worldergonomic ocal design for easy storage in the pocket, bag or slyder systemreinforced composite constructionsold as a pair10g per leverthe slyder storage system keeps your co2 inflation to hand where ever your bike goes, securely and conveniently storing your 25g co2 cartridges and slug plug under your bottle cageallows you to carry 25g c02 cartridge with an inflation adapter fitted for quick access when you get a puncturesleeve prevents hands from freeze burnversatile mounting to frame or seat post, using bottle bossesco2 cartridges not included