A trimmer line, also known as a weed eater line or string trimmer line, is a thin, flexible line used in trimmers to cut grass and weeds. Trimmer lines are typically made of nylon or other synthetic materials, and they come in a variety of diameters and shapes.
The best trimmer line for a particular application will depend on the type of grass or weeds being cut, the size of the area being trimmed, and the type of trimmer being used. In general, thicker trimmer lines are more durable and can cut through thicker vegetation, while thinner trimmer lines are more flexible and can be used in tighter spaces.