Compatible with Worx Weed Eater: WG150, WG151, WG151.5, WG152, WG153, WG154, WG155, WG155.5, WG156, WG157, WG160, WG160.1, WG160.2, WG163, WG165, WG175, WG180. Abrasion Resistant: The WA0010 trimmer spool is constructed with upgraded nylon polyamide material that has a tensile strength of over 100 lbs and is 30% more durable than other brands for longer life. Efficient Cutting: The trimmer line spool for Worx weed eater features an elliptical aerodynamic shape that reduces drag, is pliable and flexible, allowing the line to stretch and cushion on impact with hard surfaces, increasing cutting efficiency by 50%, enabling each spool to cut more weeds. Easy to Use: The weed eater spool for Worx weed wacker automatically feeds via centrifugal force, reducing the need for manual line adjustment during use. Professional Seller: As a professional brand, we offer excellent after-sales service and product quality warranty. Package contains 8 packs of WA0010 replacement spools: Medium 1.65mm burgundy spiral nylon rope, 10FT/3.05M per spool, includes 2 spool cap covers.