... high reliability and long lifespan 1, noiseless oil free air pump .Model: SL400Rated voltage: 110/220V Power input:<= ... It needn't add oil when using , the air exhausting from tank do not have any molecule,adopting ... than 60DB.Green environmental protection: No oil lubrication, air supply is cleaning and drying.Warranty period: One year ... -82442976 CP: Tracy 480W mute oil free air pump compressor part