Compatibility: This trimmer line spool is designed to be compatible with WA0010 cordless brush cutters. Fits WG150, WG15, WG151.5, WG152, WG153, WG154, WG155, WG155.5, WG156, WG157, WG160, WG160.1, WG160.2, WG163, WG163.65, WG175, WG180.High-quality ABS spool and durable polyamide nylon thread. Nylon lines are soft and flexible, allowing them to stretch and cushion upon impact with hard surfaces.Auto Feed System Replacement: Replacement spool system eliminates the need for manual winding. Each spool is pre-wound and can be quickly replaced in seconds.Designed to use centrifugal force and aerodynamics to reduce drag and enable faster cutting. The aerodynamic shape reduces resistance for more efficient performance. Soft and flexible line stretches to absorb impact with hard surfaces.Package Contents: 12 packs of 3m x 1.65mm line spools and 2 replacement trimmer caps. Spools compatible with WA0010, caps compatible with WA6531 GT.Note: Measurements are taken manually. Please allow 1-3 cm variation. Color may vary slightly due to lighting and screen display differences. Refer to the actual product received for final appearance.