The PORTER-CABLE PXCM019-0350 1/4 in. Air Line Filter removes moisture and contaminants from the air stream to improve the life of your tools. The air line filter includes a threaded polycarbonate bowl for easy filter element change and a manual drain to remove liquids. The Porter Cable 1/4 in. NPT Air Line Filter works great to install in-line in any compressor, air tank or air system. The manual drain on the air line filter removes solid contaminants and bulk liquids. Removes moisture and contaminants to improve tool operation Manual drain on the air line filter removes solid contaminants and bulk liquids Threaded polycarbonate bowl for easy air line filter element change Porter Cable air line filter installs in-line 1/4 in. NPT Use air line filter with Porter Cable Regulator (Model# PXCM019-0351)