Product review (5 stars): Very good product
Everything that came in this package was in perfect condition, and it all works perfectly.  The product description is vague because it promises "detailed instruction".  I assumed this would be assembly instructions, but I did not recieve any.  The only instructions included showed how to adjust the CO2 regulator, a very important thing to know indeed.  Luckily, it doesn't take a lot of brain power to figure out where everything connects, and it all worked out just fine.
So . . . everything works, there were not any assembly instructions.