I ordered this sprinkler with high hopes because I have a huge lawn, no sprinkler system, and it just isn't possible to water with conventional "move-around" hose-end sprinklers.  I got it to work (make sure you get the sprinkler arms in exactly the right position!). The sprinkler itself is quite heavy, metal, but - the cheap plastic end-ramp (that the sprinkler is supposed to climb onto & shut itself off) is absolutely useless.  Why Nelson thought a light-weight plastic fixture with an inadequate short rod to anchor it into the ground would be acceptable and work is beyond me! I've tried a number of times to make this work, with only one success... I have a LARGE rural lawn - it's not a golf course! - but it should be acceptable for this to negotiate.  (I recently bought a new hose - a Tuff-Guard Extra Flexible, Kink Proof Garden Hose - and the traveling sprinkler can't follow it at all, but gets hung up on the hose ridges.) - This thing will probably live in the garage until I donate it, sell it, or give it away... I'm going to check out other brands...