We know the scene; you stock up on three packs of CO2 and after a few group rides, the seemly endless supply of cartridges has been diminished and you're the one in need of rescuing. Buying in bulk is no longer limited to Stinger Waffles and toilet paper, so keep your CO2 stash loaded with the Portland Design Works 20 Count Box of CO2.

The 16 gram, threaded CO2 cartridges work with the majority of inflators, and slip easily into your jersey pocket or seat bag. The cartridges are a clean, food grade type, so you don't have to worry about any freezing ooze contaminating your inflator or valve stems. The Portland Design Works 20 pack comes neatly organized in a box that fits nicely in a tool bag or on a shelf.

Please Note: Per UPS regulations, ORM-D items such as this must ship via surface transport: UPS Ground or UPS Standard (Canada). We are unable to ship ORM-D items internationally, or to Alaska, Hawaii, or Puerto Rico.