Coalescing Filter Element, Filter Type Coalescing, Particulate, Filter Rating 0.01 micron, Compatible Grainger Part Number 4HDR9, Compatible Manufacturer Part Number AA040HNFI, Filter Efficiency 99.9999 Percent, For Fluid Type Compressed Air, Nitrogen Gas, For Substance Type Air; Nitrogen, Series OIL-X EVOLUTION Genuine, Standards All Editions of ISO 8573-1, ISO 12500-1