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 damage to the trimmer and prevents clogging during use. Safety Precaution: Always wear protective goggles and long clothing when operating the trimmer to avoid injury. Disconnect power before installing, removing, or replacing accessories. Specification: Material: Nylon. Size: 6m long, 1.6mm diameter. Trimmer Spool Model: F016800570. Compatible with Bosch Trimmer Models: Universal GrassCut 18, Universal GrassCut 18-26, Universal GrassCut 18-260. Features: Extends 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 spool design eliminates the need for hand-winding. Package Includes: Replacement spools as shown.