Aluminum: Combines increased resistance to wear and high stress, making it suitable for cutting dense grass or use on rocky ground.
Left-handed: Left-hand thread (loosens and tightens counterclockwise) for compatibility with specific lawn mowers and brush cutters. Select this feature according to your tool manufacturer’s specifications.
It directly affects the performance of the grass trimmer, as it determines its durability during use and compatibility with the machine’s power. Thicker line requires a more powerful engine, while thinner line is suitable for lighter tasks.