Product Description This silencer is used for the air intake of air compressors, effectively blocking dust and moisture in the air and reducing operating noise. The housing is made of coated metal shell for greater durability. Dimensions: 74mm x 62mm, External thread diameter: 20mm, External thread size: 1/2 inch, Weight: 101g Package: 2 x 1/2 inch thread air compressor silencers, including 4 filter cartridges This silencer can be used in blowers, air compressors, boilers, exhaust ports, generators, water pumps, and other noisy equipment. Color: Black Material: Metal Package Contents: 1 x Generator Silencer Kit This package only includes the above contents and does not include other products. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. The measurement tolerance is +/- 1-3 cm.