The automatic head that the trimmer had, was getting on my nerves as I had to stop every so often. I got this one and I was saved! The trimmer line wears out progressively from the edges, and does not break at the base like it used to with the automatic one. That's why (and because it's double) the changes are less frequent and material consumption is much lower than before. Changing the trimmer line is a breeze. You just loosen and tighten the Allen bolt over and over again. Additionally, it is lighter than the automatic one and so simple that there is nothing to break. It probably will never break. *The trimmer line pieces in the package are very short and low quality. I put my own trimmer line with a length up to the cutter of the guard. Here is a first use video I made: https://youtu.be/e6l-o32JBhs

One of the best trimmer heads, lightweight and does not strain the trimmer with perfect results of use!