Compatible with the TASER X2 Professional Series, these replacement cartridges are perfect to keep stocked alongside your TASER weapon. Each cartridge contains a primer, gas capsule, probes, serialized tags and conductive wires for accurate firing.Compatible with the TASER X2 Professional Series, these replacement cartridges are perfect to keep stocked alongside your TASER weapon. Each cartridge contains a primer, gas capsule, probes, serialized tags and conductive wires for accurate firing.