This will make setting up your system so much easier. 
It comes with:
25 Brass Fittings
30 Ft total, of 3 sizes of Hose (3/8", 1/2", 3/4")
2 Ball Valves
1 Pressure Gauge
1 Roll Pipe Tape
 
It can be hard to figure out what you all need to plumb your system. Pump, Filter kits, & Adapter(BTS) are sold  separate.  Partially assembled so it is easier for you to set it up, & comes with a diagram. This is the way Greg plumbed his system. You should have everything you need for plumbing with this kit.