FEATHERS:1.Mufflers utitlize porous sintered bronze filter element secured to standard pipe fittings.2.These compact and inexpensive mufflers are 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 : Brass Exhaust MufflerFiltering Element : Sintered BronzeBody Material : BrassThread Length : 0.31" = 8mmThread Outer Diameter : G1/4Maximum Pressure : 300PSIOperation Temperature : 2 ~ 150 CelsiusTotal Size : 0.65" x 0.55" / 16.5mm x 14mm(D*H) Package Content5 x Sintered Bronze Exhaust Muffler