It's great.  Rainbird had the marketfor many years until (apparently) their patent expired.  Then the cheap plastic imitators entered the market with their leaky junk.  We trashed a couple of them when we received and began to use this well-made (en Mexico) device.  It's made of metal and well-crafted. The only caveat is that this product does not include the spike to anchor it in the ground.  It appears it is meant to screw into an existing 1/2" pipe already installed in the ground.  Fortunately, we were able to adapt it to the spike from one of the cheap products we trashed and it works fine.  My advice is to pay a bit more and get this well-made device.