Compatible Trimmer Model: Bosch Universal GrassCut 18, Universal GrassCut 18-26, Universal GrassCut 18-260 grass trimmer. Spool Model: F016800570. String Trimmer Replacement Spools 6m long, 1.6mm in diameter. Spool cover cap model: 1600A01R5J. Premium Material: Quality nylon cord, durable and efficient for cutting grass. Flexible and strong, allowing the line to stretch and absorb impact on hard surfaces. Excellent Workmanship: Professionally wound using CNC cutting and automatic winding technology, providing safer and more efficient performance than manual winding. Reduces strain on the trimmer and prevents clogging during mowing. Precaution: When using this product, wear protective goggles and long clothing to avoid injury from flying debris. Remove the power source before installing, replacing, or removing accessories. Specification: Material: Nylon. Size: 6m long, 1.6mm diameter. Trimmer Spool Model: F016800570. Trimmer Cover Cap Model: 1600A01R5J. Compatible with Bosch Trimmer Models: Bosch Universal GrassCut 18, Universal GrassCut 18-26, Universal GrassCut 18-260 grass trimmer. Features: Increases edging life up to 25% compared to standard conditions. Pliable and flexible design allows line to stretch and cushion upon impact. Aerodynamic shape reduces drag for more efficient cutting. Autofeed grass trimmer spool eliminates the need for hand-winding. Package Includes: Spools and cap as shown in image. Our products are made with high-quality materials and designed for reliable performance. Please verify product dimensions and specifications to ensure compatibility with your equipment. For any questions regarding the product, feel free to reach out for support.