This Replacement Grass Trimmer Line Spool Set Is Designed For Worx Weed Eater. With The Auto Feed System, The Replacement Spool Eases The Tedious Work Of Hand-Winding Spools. The Spool Compatible With Worx Utilizes Centrifugal Force To Feed The Trimmer Line As It Is Needed. High-Quality 10FT/ 3.1M Weed Eater Edger Line String Easily Cuts Through Grass And Weeds. Strong Toughness, Not Easy To Break, Necessary For Garden Mowing. Use Tips: Always Wear Eye Protection. Unplug Tool Before Changing, Installing, Or Removing Accessories. Choking Hazard, Small Parts Keep Away Children Under 3 Years. Only Suitable For Tender Weed Grass. Tough And Strong Weeds Please Use Blades To Trim. Does Not Fit Any Other Brand Of String Trimmers. Specification: Type: Trimmer Spool For Model:Wa0010 Spool Material: 70% Nylon + 30% Glass Fiber Grass Rope Material: Nylon Spool Line Size: 4x1.8cm/1.57x0.71inch Spool Line Weight: 15g Spool Length: 3.1m*1.65mm Applicable Worx System: Wg150, Wg151, Wg151.5, Wg152, Wg153, Wg154, Wg155, Wg155.5, Wg156, Wg157, Wg160, Wg160.1, Wg160.2, Wg163, Wg165, Wg175, Wg180 Package Included: 20 x Spool Line 2 x Cap Cover Replacement grass trimmer line spool set designed specifically for Worx weed eaters Features an auto feed system that simplifies the tedious task of handwinding spools Utilizes centrifugal force to feed the trimmer line as needed, ensuring efficient operation Highquality 10FT/3.1M weed eater edger line string effectively cuts through grass and weeds Constructed with strong toughness, making it resistant to breakage and ideal for garden mowing