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. Premium Material: High-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 CNC cut and automatically wound for consistent performance, safer and more time-saving than manual winding, reduces wear on the trimmer and prevents clogging during use. Safety Precaution: Always wear protective eyewear and appropriate clothing when operating the trimmer to prevent injury. Disconnect power before installing, removing, or replacing accessories. Specification: Material: Nylon. Size: 6 m long, 1.6 mm diameter. Trimmer Spool Model: F016800570. Compatible with Bosch Trimmer Models: Bosch Universal GrassCut 18, Universal GrassCut 18-26, Universal GrassCut 18-260. Features: Extends edging life up to 25% under normal conditions. Pliable design allows line to stretch and cushion upon impact. Aerodynamic shape reduces drag for more efficient cutting. Auto-feed spool design eliminates the need for hand-winding. Package Includes: Replacement spools as shown.