After hitting a rock that was inside the stump I needed to get a new chain. I sharpen chains when I can, but sometimes when the price is good it seems to be easier to put a new chain on.  I used this on  WORX 16" saw, it is a little different from the original with a bit more aggressive cut, which is something to keep in mind with overloading a saw. The difference had to do with the standoff bumps the original has that control how much bite each tooth takes and also limits kickback. Using the original type is recommended, but this one serves the purpose I needed it for.