General description WA0014 Replacement Spool for Trimmer Line is designed for compatibility with Worx WG168, WG184, WG190, WG191, and WG191.9 Auto-Feed Lawn Mowers. This premium quality spool is made from durable ABS material and features polyamide nylon thread, ensuring flexibility and longevity. Technical specifications Spool Cap Model: WA0037 Trimmer Line Length: 20 feet Trimmer Line Diameter: 0.080 inches Measurement Allowed Error: +/- 1-3 cm Usage The auto-feed system of this replacement spool eliminates the need for tedious manual winding, making it easy to use. It is suitable for soft grass only; for tougher weeds, blades should be used for trimming. Other information The color of the item in the picture may vary slightly from the actual product.