I've seen these over the years but never had a need for one until now. I have about a 150 foot long strip of grass that would require many many sprinkler repositionings to cover. This works like a charm and is so fun to watch. My neighbor is very enamored with it too. It seems very well made out of heavy guage steel and weighs more than it looks. I guess it needs to be heavy to have enough traction to drag nearly a hundred feet of hose.