Product descriptions from the supplier Sintered bronze pneumatic silencer for noise reduction G1/4 male thread connection easy installation Effective exhaust noise reduction up to 35 dB(A) High flow rate suitable for high speed pneumatic valves Corrosion resistant sintered bronze body durable long life Prevents foreign particles from entering pneumatic circuits Compact design for space limited applications 100% new & original, factory-tested with 1-year warranty About this