I had one of these on my 7.5 HP Outboard which was on the transom of my fishing boat.I say "had," because the scumbag who stole this motor pried it off with a tire iron. And from the look of it, there didn't seem to be a whole lot of effort put into breaking it. He was nice enough to leave me the broken lock and the tire iron.It's been said before that if someone really wants your outboard they're going to figure out a way to steal it.But I don't think this piece of junk even slowed the thief down.