Wide Compatibility - Perfectly designed for multiple Greenworks cordless trimmer models: 21222A, 21602, 21062, 21132, 21242, 21282, 21302, 21332, 21262, 21312, 21342, 2100302. Save Money and Time - The aerodynamic shape allows for less drag for more efficient cuts. With the automatic feed system, the replacement spool makes the tedious work of hand-wound spools easier. Premium Quality - Made of twisted and synthetic copolymer nylon resin, it is pliable and flexible and helps stretch the line and cushion when it hits hard surfaces. Healthier and Greener - That's good for your lawn. It is superior to the standard circular cutter because it produces an improved cutting action that helps keep the grass healthier and greener. Package includes -16ft / 0.065in; 4.88m / 1.65mm. 6x 16ft cutting line. Non-genuine aftermarket product. Product is not sponsored, endorsed, or affiliated with the brands including Greenworks