Everything needed to fix a flat on a standard size mountain or high-pressure road tire, all housed in a compact package that fits conveniently on the seatpost. 16g CO2 cartridge included (will ship FedEx Ground). Fits seatpost diameters from 27.2mm to 30.9mm. Plastic front clip holds two glueless patches. Silicon body holds 16g cartridge, 90-degree head, and two-sided tire lever. Weight: 104g