Used in the suction port of air compressor, it can effectively block the dust and moisture in the air and reduce the noise when working. The housing is made of coated metal iron shell for more durability. Dimensions: 74 mm x 62 mm, male thread diameter: 20 mm, male thread size: 1/2 inch 101 grams Package: 2Pcs 1/2inch Thread Air Compressor ,with 4 cartridges The muffler filter can be used for noisy equipment such as blowers, air compressors, boilers, exhaust ports, generators, pumps and exhaust ports. Colour:Black Material:Metal Package Contents: 1 x muffler for generator kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.