SIZE CHECK: 1/4" NPT Male to 1/4" NPT Female brass street elbow.ATTENTION: NPT thread size refers to the thread size, NOT equal to the Length or width of the fitting measured by common tools like tape measure or vernier caliper. Please find the correct size comparison information on the Detailed Page before purchasing SOLID BRASS: Premium forged brass 90-degree street elbow, thicker and stronger, durable, high corrosion resistance, low magnetic permeability, and high-temperature ductility DEEP THREAD: Premium and deeper NPT straight thread design makes the pipe adapter fitting better engage with objects, which enhances fixation and effective leakage prevention; And the smoother threads for easier and faster installation EASY INSTALLATION: When the fitting is connected to the pipeline, the male NPT end should be linked to the female NPT and the female NPT on the other end should be connected to the male NPT of a pipe fitting WIDE APPLICATION: The fitting is served well for grease, fuels, LP, and natural gas. Also, it works well in home improvement rough plumbing pipes, pipe fittings, and accessories pipes