Features: 16 Gram Threaded Cartridge Fits All CO^2 Pumps That Accept 16G Threaded Small, Compact, Easy To Use 1 Box / 20 Cartridge Count Capacity Dependent On Tire Size: 29x;2.0 - 31 PSI 26x;1.95 - 40 PSI 700x23c - 130 PSI 700x28c - 86 PSI 20x;2.0 - 48 PSI 24x;2.0 - 42 PSI