Eaton Weatherhead 202X5 Brass CA360 Inverted Flare Brass Fitting, Adapter, 1/8" NPT Male x 5/16" Tube OD (Pack of 10) Adapts 1/8" NPT male end to 5/16" OD flared tubing female end Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability For use with LP and natural gas, refrigeration, and hydraulic applications