RSJA-01 Spool: 【Durable Material】Made with high-quality ABS for a lightweight yet robust construction 【Efficient Nylon String】Equipped with a 1.6mm sky-blue round nylon line for precise and effective trimming 【Ample Length】Offers 32 feet (10 meters) of nylon line, perfect for extended use without frequent replacement 【Compact Design】Measures 65mm x 20mm, ensuring easy handling and seamless compatibility with Spear & Jackson trimmers 【Reliable Performance】Engineered for smooth operation and long-lasting performance in demanding lawn care tasks RSJA-01-1 Spool Cap: 【Premium Quality Material】This grass trimmer cap is constructed from high-grade ABS plastic, known for its toughness and resistance to environmental wear 【Seamless Compatibility】Measures 82mm x 38mm, ensuring easy handling and seamless compatibility with Spear & Jackson trimmers 【Easy Replacement】This compact and lightweight cover is tailored for effortless installation. Swap out old or damaged covers quickly to keep your trimmer in optimal working condition 【Reliable Protection】Acts as a shield for your trimmer’s internal mechanisms, safeguarding them from dirt, debris, and impact during operation 【User-Friendly Design】With its straightforward installation process, this trimmer cover requires no specialized tools, making it ideal for both professional landscapers and casual users Specifications: RSJA-01 Spool: Material: ABS Nylon Rope: 1.6mm Sky Blue Round Length: 32FT / 10M RSJA-01-1 Spool Cap: Material: ABS Product Size: 82*38mm Compatible with: Spear and Jackson GT450, GT600, N1F-GT-280/450-D, S6030ET Package included:6 x Replacement Spool1 x Spool CapOther things not included