Features The muffler is mainly installed at the air inlet of the air compressor, which can effectively block dust and moisture in the air. The oil‑free machine muffler replacement can reduce the noise of the compressor in operation and make it run normally. The muffler is a G1/4 opening thread specification, standard size, and it is airtight when installed on the compressor. The plastic silencer is small in size, light in weight, easy to install and disassemble, and has a long service life. The oil-free muffler has a good filtering effect and is suitable for silent oil-free air compressors. Specification: Item Type: Oil‑Free Muffler Type: Fragile accessories Top Diameter: Approx. 55mm / 2.2in Total Height: Approx. 72mm / 2.8in Thread Width: Approx. 13mm / 0.5in Filter Element Size(Outer Diameter x Inner Diameter x Height): Approx. 58 x 50 x 24mm / 2.3 x 2 x 0.9in Applicable Compressor Type: Silent oil-free air compressor Package List:1 x Oil‑Free Muffler Package List 1 x Oil‑Free Muffler