This air pressure regulator works really well. It comes in four separate peices and it is super easy to peice them together. It also comes with a pressure gauge so you can keep an eye on the amount of pressure and adjust it to whatever you want it to be. So far it works really well and I definitely recommend this regulator to anyone. The packaging it came in is great and I received it on time as well. It is made with good materials and does not feel cheap or flimsy at all. It is very easy to use and it is something that we definitely need. I purchased this pressure regulator at a discount in exchange for an honest and unbiased review.