Umarex Walther Maintenance Capsules 12g 5-pack

In addition to the CO2 gas, the valve maintenance capsules are  filled  with 0.5 g of a special oil that cleans and lubricates the valve  when  fired and at the same time provides all sliding parts of the  mechanism  with an oil film. Used regularly, the maintenance capsule  ensures  constant precision and function of the weapon.