Premium Heavy-Duty Nylon Construction – Made from high-quality- wear-resistant material for long-lasting performance and durability. Square-Shaped for Enhanced Cutting Efficiency – Provides sharper edges than round lines- delivering cleaner and more precise cuts. Generous 50M Length for Extended Use – Reduces the need for frequent replacements- ensuring long-lasting trimming sessions. 3.5MM Thick for Cutting Tough Weeds & Grass – Designed to handle dense grass- thick weeds- and light brush with ease. Universal Compatibility – Works with most gas- electric- and battery-powered string trimmers- making it a versatile choice. Low Breakage & High Wear Resistance – Engineered to minimize snapping- fraying- and excessive wear- providing a reliable cutting experience. Perfect for Home & Professional Landscaping – Ideal for gardens- lawns- farms- parks- and commercial landscaping applications. Keywords 3.5mm square trimmer line- heavy-duty trimmer string- 50m trimmer line- high-performance grass cutting cord- universal brush cutter string- durable lawn maintenance tool- professional landscaping trimmer line- long-lasting weed trimmer cord- efficient grass trimmer line- tough brush cutter line