Master Mechanic Grass Trimmer Line

These pre-cut lines are specifically engineered for pivot-head trimmers compatible with model 490-060-9019. They are not universal, so you should verify your trimmer's manual or model number before purchasing to ensure a proper fit.

The serrated edge acts like a saw, providing a more aggressive cutting action. This design is particularly effective for slicing through thicker grass and weeds rather than just whipping them, which results in a cleaner cut.

No, that is the main benefit of this product. These come as nine individual pre-cut lengths, allowing you to swap out the old line quickly without the frustration of winding or tangling.

You should replace the string when it becomes too short to cut effectively or if the serrated edges have worn down to the point where they are no longer slicing through grass cleanly. If you notice your trimmer is tearing the grass rather than cutting it, it is time for a fresh piece.

While the serrated edge is more aggressive than standard line, these are designed primarily for routine lawn maintenance and edging. They are best suited for grass and light weeds rather than woody brush or thick stalks.