The Hayward WFXJ500KIT is designed for easy installation and use with the Deck Jet 500. It comes with a nozzle, retainer kit, and winterizing ball. The nozzle allows for precise adjustment of water flow and can be used in a variety of applications. The retainer kit provides secure, durable connections to ensure that the nozzle stays securely connected to the Deck Jet 500. The winterizing ball helps to prevent the nozzle from getting clogged during cold weather.