Compatible Trimmer Models: Bosch Universal GrassCut 18, Universal GrassCut 18-26, Universal GrassCut 18-260. Spool Model: F016800570. String Trimmer Replacement Spools – 6 meters long, 1.6mm diameter. Spool cover cap model: 1600A01R5J. Made from high-quality nylon cord for durable and efficient grass cutting performance. Flexible and strong design allows the line to stretch and absorb impact on hard surfaces. Professionally wound using CNC cutting and automatic winding technology for consistent performance, reducing strain on the trimmer and minimizing clogging. Features an auto-feed spool design that eliminates the need for hand-winding. The aerodynamic shape helps reduce drag for more efficient cutting. Pliable and flexible line extends edging life compared to standard conditions. Always wear protective eyewear and appropriate clothing when operating the trimmer. Disconnect power before installing, removing, or replacing accessories. Material: Nylon. Length: 6m. Diameter: 1.6mm. Package includes spools and cap as shown in image.