Aero-Flex NO MORE LINE Replacement Head Kit-No Glider

Install was easy enough, easy to follow instructions in the box. I had to put a little extra elbow grease into removing the original trimmer head as I've had my trimmer for several years now. The lines attached to the new head were perfect size and shape, they never hit the guard during operation. They did not deviate either, so it provided a balanced edge on the grass boarder. I have a small yard, however, during use, the trimmer lines will hit concrete and brick garden edgers. The lines are made of sturdy material because after multiple uses , there was still very little wear on the lines.