Features: High Quality ABS spool sturdy enough, polyamide line string flexible, strong enough for long working life. Pliable and flexible allowing for the line to stretch and cushion on impact with hard surfaces Aerodynamic shape allows less drag for more efficient cut Each replacement spool comes pre-wound and may be replaced easily in a few seconds. Replacement spools designed for grass trimmers and edgers. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: ABS spool +polyamide line Size: As picture show  Package List: Choice 1: 3x Grass Trimmer Spools Line,1 Cap Choice 2: 6x Grass Trimmer Spools Line,2 Cap Choice 3: 10 x Grass Trimmer Spools Line,2 Cap Choice 4: 12 x Grass Trimmer Spools Line,2 Cap Choice 5: 16 x Grass Trimmer Spools Line,3 Cap