Eaton Weatherhead 1869X4X4 Brass CA360 D.O.T. Air Brake Tube Fitting, 90 Degree Elbow, 1/4" NPT Male x Tube OD Adapts 1/4" NPT male end to 1/4" OD air brake tubing at a 90-degree angle Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Quick connect, for use in air brake system assemblies