These Aignep 7005 Adjustable Silencers have a brass BSPP male thread and sintered bronze filtration to 500 microns.

The silencers are suitable for use with compressed air upto 10 bar and have a working temperature of -10 to +150 °C

Silencers are also referred to as mufflers

These silencers are normally used with pneumatic cylinders to control the air flow being exhausted to slow down the operation.