Fangrui Product Details This Grass Trimmer Line Spool Set Is Designed For Weed Eater. With The Auto Feed System, The Spool Eases The Tedious Work Of Hand-winding Spools. The Spool Compatible With For 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: Wear Eye Protection. Unplug Tool Before Changing, Installing, Or Removing Accessories. Only Suitable For Tender Weed Grass. Tough And Strong Weeds Please Use Blades To Trim. Type:trimmer Spool For Model:wa0010 Spool Line Size:4x1.8cm/1.57x0.71inch Spool Length:3.1m X 1.65mm Applicable For System:wg150, Wg151, Wg151.5, Wg152, Wg153, Wg154, Wg155, Wg155.5, Wg156, Wg157, Wg160, Wg160.1, Wg160.2, Wg163, Wg165, Wg175, Wg180 Colour:as Shown Material:plastic+metal Package Contents: 20 X Spool Line 2 X Cap Cover Only The Above Package Content, Other Products Are Not Included.