Four Pack TASER® C2 Replacement Cartridges Quick loading probe replacement cartridge for the TASER® C2 series only. Offers quick and easy reloading of your TASER® C2 simply by depressing the two side buttons, sliding out the used cartridge and inserting a fresh cartridge. The TASER® C2 replacement cartridge, containing compressed nitrogen, is used to deploy two small probes that are attached to the TASER® C2 device by insulated conductive wires with a maximum length of 15 feet (4.5 meters). Must be 18 years of age or older to purchase. FEATURES Compressed Nitrogen Propulsion Quick Loading Design 15 Foot (4.5 meters) Maximum Range