Exhaust Muffler, Air Inlet Size 1/4 in, Air Inlet Type NPT, Air Inlet Gender Male, Filter Element Material Brass, Maximum Operating Pressure 300 psi, Minimum Operating Temperature -20 Degrees C, Maximum Operating Temperature 80 Degrees C, Body Material Aluminum Alloy, For Fluid Type Compressed Air, Neutral Gases, Material Filtered Abrasive Grits, Dust, Metal Chips, Other Contaminants, Number of Air Inlets 1, Outside Diameter 7/8 in