Everbilt 3/8 in. Compression x 1/2 in. MIP Brass Adapter Fitting LFA-124 is a brass coupling with a 3/8" fitting size on one end and a 1/2" MIP connection on the other. It is compatible with multi-purpose pipe materials, has a maximum working pressure of 150 PSI, and can handle temperatures up to 250 F. This threaded adapter is suitable for applications involving air, oil, and potable water.