these things never do a good job. rarely do they water close in and the center adjusting screw just doesn't work most of the time. on some the spray seems to go up in the air at least as much as it goes out. with this water emergency we are having you would hope Rain Bird and the like would come up with a design way more efficient than this. i am fed up with replacing NEW nozzles in an effort to find one that will stop my grass turning brown just 6 feet from the outlet.