If you work with pneumatic systems, these ZLYY brass mufflers are a simple upgrade to reduce noise and improve safety. Each muffler features a 3/4\ male thread, made from durable sintered bronze that filters exhaust air while dampening sound. They're rated for up to 300 PSI and can handle temperatures from 35°F to 300°F, making them suitable for various industrial and workshop applications. The pack includes two mufflers plus a roll of Teflon tape to help you get a tight, leak-free seal during installation. They're compact and easy to install — just thread them into the exhaust port of cylinders, solenoid valves, air tools, or gearboxes. Great for reducing the sharp hiss from pneumatic equipment, which is especially handy in enclosed spaces or busy workshops. Whether you're a DIY enthusiast or a professional mechanic, these mufflers help create a quieter, more pleasant working environment. Plus, the bronze construction resists corrosion and lasts. Keep your shop a little quieter and your equipment running smoothly with this affordable, practical set.