Each Black Deck Jet Includes Main Deck Jet Body, Black Cap and Swivel Nozzle. Pack of 4. FOR DEFECTIVE COMPLAINTS: Before use remove the center nozzle and flush lines to prevent nozzles from clogging up. Water needs to be filtered. If nozzles become clogged check that a filter is being used. If a filter is present check that it is clean and/or proper size to prevent debris to pass. If an excessive leak is present at the at the ball joint it can be unsnapped and lubricated with "lube tube" pool o ring lubricant.