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, debris, oil, and humidity from your compressed air. The air enters 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, there is a red service indicator that will rise when the filter element needs to be changed. Connected to the filter is a desiccant bead dryer that removes all water and humidity in the compressed air. Desiccant beads change color from blue to light pink when they are saturated and need to be changed. Both of these filters have have quick release bowls for easy maintenance. Each bowl is clear and has a metal guard that provides easy viewing for contents as well as providing impact protection. Replacement air filter elements are available if needed and are sold separately; depending on how much you use the filter they are typically changed every 6 months. This is a great accessory to have in your air line if you are running paint guns, plasma cutters, sandblasters, and more! Click on the Technical Specs tab for more information.