12 gallon air lift tank with 1/2 ports and 1/2 male fittings. I was going to use this but i decided to use the 5 gallon tanks that i was selling in my other thread. I paid about $40 for the fittings and about 80 for the tank not including shipping. Id like to see at least $90 for it not including shipping. This has never been used infact i just got it about 2 months ago and is been sitting in my closet ever since.