Silencer filter for air compressor; Thread Type: 38'Suitable for most compressors, easy to install and operateAble to reduce compressor noise at workUsed for the inlet of the air compressor, can effectively lock the dust in the air moistureGreatly help to improve the efficiency and service life of the air compressor>This air compressor muffler is ideal for blocking dust in the air and reducing air compressor noise. It is designed in 38" screw thread type for oil free air compressor. It is easy to install and is a good way to improve the efficiency and durability of the compressor.Note: The data is manual measurement, please allow 149cm error , due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.