Features [COMPACT SIZES] These pneumatic silencers are small and compact, especially suitable for places with limited space. [4PCS IN 1 SET] Including 4pcs air exhaust mufflers, easy to install and maintain, with high noise reduction effect. [HIGH EFFICIENCY] With excellent noise reduction and filtering effects under dry conditions, has powerful functions. [HIGH PERFORMANCE] Metal silencer can be used in high temperature and high pressure environment, and has good impact resistance. [WIDE APPLICATION] Widely used in cylinders, solenoid valves, crankcases, gear boxes, fuel tanks, pneumatic tools, etc. Specification: Item Type: Pneumatic Muffler Model: PSF-4 Material: All Copper + ABS Maximum Pressure Resistance: 1.0Mpa Silencer: 30DB Operating Temperature Range: 5-60℃ Uses: Widely used in cylinders, solenoid valves, crankcases, gear boxes, fuel tanks, pneumatic tools Package List: 4 x Muffler Note: Please match the correct size before use. Package List 4 x Muffler