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, ensuring safer and more consistent performance compared to manual winding. Reduces trimmer damage and prevents clogging during mowing. Precaution: Always wear protective goggles and appropriate clothing when operating the trimmer to avoid injury from flying debris. Disconnect power before installing, removing, or replacing 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. Features: Increases edging life up to 25% under normal 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 picture.