High quality materials: metal. Greatly contributes to improving the efficiency and durability of the air compressor. Dustproof: The air compressor muffler is used for the inlet of the air compressor and can effectively block dust in the air humidity. easy to install. Noise Reduction: Can reduce the noise of the compressor when working and make the working environment more comfortable. Wide Application: Suitable for oil-free air compressors and noisy equipment such as small air compressor air pumps, fans, air filter cartridges, boilers. Package Content: 2pcs 1/2'PT 20MM Silent Filter for Air Compressor. Product Specifications: Material: Metal + Filter Paper Color: Black Thread Version: 1/2 " Thread: 20mm Silencer Height: 76mm Quantity: 2 Other Benefits: Reduced Compressor noise during operation Durable, it is the best choice to reduce compressor noise Use a quiet filter to effectively block air dust Improves the efficiency and service life of air compressors Easy to install, suitable