Material: Plastic spool and caps and durable polyamide nylon thread, flexible and long service life. Package:Included 4 Pcs replacement trimmer line spool for Worx WA0010 Grass Trimmer.Perfect for replacements or repairs. Features:Use centrifugal force and aerodynamics to reduce drag and achieve fast cutting. Easy to Use: No complicated processes. Auto feed system replacement spool exempt you from the tedious hand-winding work. Compatiblity: This product replacement line is compatible with the following WORX trimmer and edger models: WG150, WG151, WG151.5, WG152, WG153, WG154, WG155, WG155.5, WG156, WG157, WG160, WG160 .1, WG160.2 , WG163, WG165, WG175, WG180. The WORX WA0010 replacement spool is made of high-quality imported nylon wire, which winds flat and avoids the wire being stuck on the lawn mower Quantity: 4 pieces Color: as picture shown Size: wire diameter: 1.65mm/wire length: 3.048m