You get 5, Hunter Pro-Spray PRS30 6" popup sprinklers and 1 Rain Bird RD1800. The RD1800 is not pressure regulated and does not have a check valve, but it does have the extra heavy duty cap and body that are standard with the RD1800 series. It's a 6" popup. The Hunter sprinklers are pressure regulated to 30PSI and do not come with a check valve. These are also the "no side inlet" models. These are all great sprinklers that due to their height can be used in either lawn or shrub areas. They accept a wide variety of nozzles as well and the ratcheting stem allows for easy arc alignment. I'm going to use priority mail to get them shipped out quickly.