Parker A-Lok 4FBC2N-B Brass Compression Tube Fitting, Bulkhead Adapter, 1/4" Tube OD x 1/8" NPT Female Bulkhead coupling mounts on a wall or bulkhead to connect tubing to threaded pipe through a barrier Fitting connects to tubing on one end and has an NPT female connector on the other Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Twin ferrule compression fitting for a leak-resistant seal in high-pressure applications For use with copper pipe and tubing