ITEM NAME:New Black 3/8PT Thread Inlet Plastic Filter Silencer for Air Compressor SE Black plastic construction compressor muffler use for admitting port. Easy to install by the 3/8" PT thread. Size (Approx. ) : 9 x 6.2cm / 3.5" x 2.4" (D*T);Thread Size : 3/8"PT Outlet Size : 2.3 x 1.4cm/ 0.9" x 0.55"(L*W) Color:Black.3/8"PT Thread Inlet Plastic Filter Silencer for Air Compressor. Black plastic construction compressor muffler use for admitting port. PT thread. Size (Approx. ). : 9 x 6.2cm / 3.5" x 2.4" (D T);Thread Size : 3/8"PT.