A Sprinkler in a Box 3 zone sprinkler kit features the following items with some parts coming pre-assembled. The first item is 20 feet of wire that is already hooked up to your timer and valves with 36 feet of funny pipe enabling you to connect your PVC and 9 heads together; 9 K-Rain professional series large rotor heads with 40 feet adjustable heads (each head can cover a 40 x 40 area) and we already connect the funny pipe parts to the heads; 1 bottle of primer; and, of course, a bottle of glue. The Orbit Timer is the most user-friendly timer out there. The timer is for indoor use only and is pre-wired to the valves. At the top of the picture, we start at our 6 foot garden hose that hooks to your outside faucet. This connects to the PVC, and with the PVC parts we give you. Then, go to an Orbit or Irritrol anti-siphon vaccum breaker, all pre-assembled with the PVC pipe and parts. It then hooks to either an Orbit or ProRain valves jartop series. They're interchangeable for easy fixing and up keep. These valves are what control your zones. Right next to the valve you will see PVC parts with some having funny pipe pieces - these are for your pvc pipe which we do not include. The last thing is the 2 valve boxes which cover up your anti- siphon and your jartop valves. When you buy 2 zones or more, we give you a new pair of pipe cutters and flags for free. All these parts are covered by a 5 year warranty. (FYI - 10 feet of PVC pipe costs roughly $1.60 a piece. You need 100 to 300 feet of pipe per zone which the number of feet depends on how far you go per zone.)We also give you a free large K-Rain just in case you break one.