570Z? Pro Series with patented X-Flow? technology restricts water loss if the nozzle is removed or damaged eliminating wasteful geysers. Patented X-Flow water shut-off device built into the sprinkler restricts water loss if nozzle is removed or damaged Patented X-Flow water shut-off device built into the sprinkler restricts water loss if nozzle is removed or damaged Works with any Toro nozzle Flush plugs installed on all bodies keeps debris out when flushing sprinkler lines Water Smart? zero flush no water loss at system start up Ratcheting-riser for fine-tuning arc adjustment after installation