Check the listing for details. 12gm CO2 cartridge threaded Luft refill. Color: Silver, Condition: New other (see details). Listed at 2.50 USD. 12 gram size (referring to the weight of the gas inside the cylinder) 3/8"-24 thread. Weight: 2 oz. (56gms) for full CO2 cartridge. Length x Diameter: 3.25 x .75 inches. The Diameter of the 12gm is smaller than the 16gm cartridges (also sold here), so make sure you get the right size for your inflator. Tire inflation capacities: 700x23 - 94 PSI 700x25 - 90 PSI 650x20 - 125 PSI 650x23 - 110 PSI This cartridge works with all inflators using threads, Genuine Innovations, Ultraflate, Ultraflate Plus, Ultraflate Pro, Microflate, Air Chuck, SecondWind IH, SecondWind MTB, Lezyne. Also works with the Mosquito Magnet and is food grade CO2. See my other auctions for other unique items. Buyer pays shipping based on Postal Code. You can combine shipping with other team items and usually the highest shipping is enough to pay for everything, but ask before making ONE paypal payment!