Durable Material: This male thread muffler is made of high quality material for long service life. Noise Reduction: The air intake muffler can effectively reduce the noise at work and provide a quiet environment. Used for the air compressor inlet and can effectively block dust in moisture. Specification: 3/4 25mm; Cylinder Diameter: Approx. 80mm / 3.1in Scope of Application: The air compressor muffler comes with good filtering effect, suitable for screw compressors and rotary compressors. piston. Easy to install: The silent compressor adopts standard thread for quick and easy installation.