Brand new 3/8" NPT compressed air moisture filter and desiccant dryer combo unit. Also included is a wall mounting bracket and two refills of desiccant beads. This filter / desiccant dryer removes water, oil and humidity from compressed air. The air goes through the inlet filter first which has a .01 micron filter element that removes 99.9% of oil vapor particles and debris. This filter has a turn knob valve at the bottom to drain any oil or moisture that is caught. On top of the filter is a red service indicator that will rise when the filter element needs to be changed, after the air inlet filter is the desiccant bead dryer which will remove water and humidity in the compressed air. Desiccant beads change color from blue to a light pink when they are saturated and need to be changed. Both filters have quick release bowls for easy maintenance, also both bowls are clear and have metal guards and provide easy viewing for contents as well as providing impact protection. Replacement air filter elements are available if needed, depending on usage usually they are changed every 6 months. Also more replacement desiccant beads are available in our (Regulators, Filters & Oilers) ebay store category.