Brand new 1/2" NPT compressed air moisture filter, desiccant dryer unit. Also included with this purchase is two refills of desiccant beads. This filter / desiccant dryer removes water, oil, and humidity from compressed air. The desiccant bead dryer will remove water and humidity in the compressed air. These desiccant beads change color from blue to a light pink when they are saturated and need to be changed. This has a quick release bowl for easy maintenance. The bowl is clear and has a metal guard that provides easy viewing for contents as well as providing impact protection. Click on the Technical Specs tab for more information.