The new lubrication cartridges from ASG make cleaning and maintaining your CO2 gun effortless. Compatible with all CO2-powered airguns and airsoft guns using 12g CO2 cartridges, these cartridges contain 0.8g of silicon oil that cleans and lubricates the valve while shooting, reducing friction and wear on moving parts. For optimal maintenance, use a lubrication cartridge every tenth CO2 replacement, but feel free to use them more frequently as needed to ensure smooth action, consistent accuracy, and a longer lifespan for your gun's parts.