My challenge was two part. One was building a bank of regulators out of several that I already owned and they were of two different flavors. The other was that this bank would become secondaries for multiple kegs. I bought two and used one to connect the regulators and the second one to connect an input fitting to the first one in line. This is one of those items that I wish I had another sitting on the shelf as a spare! The service from AiH was top of the line in every way.
This LHT x RHT nipple allowed me to convert a primary regulator (with direct to tank fitting) to a secondary regulator that connects to a line drop from our new bulk tank.
This piece allowed me to connect 2 regulators.