FEATHERS:1.Mufflers porous sintered bronze filter element secured to standard pipe fittings.2.These compact muffler is easy to install and maintain, particularly suitable where space is limited.3.They are used to diffuse air and muffler noise from the exhaust ports of air valves, air cylinders and air tools to an acceptable level within noise requirements. PARAMETER:Product Name : Sintered Bronze Exhaust MufflerFiltering Element : Sintered BronzeBody Material : BrassColor : Golden ToneMaximum Pressure : 300PSIOperation Temperature : 2 ~ 150 CelsiusThread Length : 0.31" = 8mmThread Outer Diameter : G1/4Total Size : 1.06" x 0.63 inch / 27 x16mm(H*D) Package Content5 x Sintered Bronze Exhaust Muffler