The Mace Pepper Gun Dual Refill Pack comes with OC Cartridge for self-defense and a Practice Water Cartridge for training purposes. This pack provides you with the necessary tools to practice and stay prepared in case of emergencies. The OC Cartridge contains pepper spray for effective defense against potential threats, while the Practice Water Cartridge allows you to familiarize yourself with using the pepper gun safely. By having both cartridges, you can enhance your skills and be ready to protect yourself when needed. It’s essential to practice regularly with the water cartridge to build confidence and proficiency in using the OC Cartridge effectively. Stay prepared and confident with the Mace Pepper Gun Dual Refill Pack!