Material: The replacement spool is made of nylon thread, which is flexible and durable. High quality spools can easily cut grass and weeds. Size: The spools are 10 feet / 3.048 m long and 0.065 inch / 1.65 mm in diameter, compatible with the original spools. Easy to use: easy to install, no complicated processes. The automatic feed system replacement spool makes the tedious work of manually winding spools easier. Package Included: 4 x Replacement Spools for Worx WA0010 Trimmer. Perfect for replacement or repairs. Compatibility: Fits most WORX trimmer models, such as WG150, WG151, WG151.5, WG152, WG153, WG154, WG155, WG155.5, WG156, WG157, WG160, WG160.1, WG160.2, WG163, WG165, WG175, WG180. Spools for Worx WA0010 Trimmer Trimmer Spool Line Replacement Spool Line for Brush Cutter Tool Accessories 4 Pieces Garden Wire Features: < p>Package includes: 4 x Replacement Wire Spool