I have a set of 3 horns rear Nathan air chime train horns. This kit is basically complete. It needs a pressure gauge just to shut the compressor is off when the tank is full. It's a 20 dollar piece. Has a viviar compressor, 5 gallon tank, one way valve switch and a k3la train horn. I have some 1/2 line that can go with it. This kit is used but still works perfect. 1000 or Obo . New kits sell for 1500 and more. This is extremely loud and alot of fun to scare people. Can take pics if wanted.