Ideal for spray guns (point-of-use) 40 micron, porous bronze element removes fine dirt particles, as oil removing media removes oil vapor and desiccant beads absorb water vapor Attaches directly to spray gun or mini regulator located on spray gun Unit is bi-directional with 1/4" NPT Blue desiccant beads lower the dew point to -30¿F and remove all water vapor. Bead color turns pink when it is time to replace filter/dryer. Pipe Size (NPT): 1/4" Max. Flow Capacity: 15 CFM Max Pressure: 125 psi Max Temperature: 130°F Quantity: 2-pack