Features: -Durable and abrasion-resistant so that the spool is changed less frequently, for optimal and precise trimming results. -Suitable for Bosch Universal GrassCut 18-26 series. Specification: Material: nylon Color: gray Long: 6.1m/20ft Diameter: 1.6mm Applicable to: Bosch lawn mower-Universal GrassCut 18/Universal GrassCut 18-26/Universal GrassCut 18-260 Replacement spool model: F016800570 Package Included: 3x Spools .