Compatibility: Compatible with Ryobi One+ AC14RL3A. Suitable for multiple models of Ryobi cordless trimmers: 18V, 24V, 40V. Premium Material: The replacement trimmer spool line is made of high-quality ABS. Not easy to break, supports fast cutting and longer service life. Convenience and High Efficiency: Flexible and strong cord for cutting. Allows the line to stretch and cushion impact on hard surfaces. The aerodynamic shape reduces drag for more efficient cuts. Auto-Feed Replacement Spool: Compatible with the Ryobi Edger and uses centrifugal force to feed the trimmer line as needed. The auto-loading system eliminates the need for hand-winding spools. Package Includes: 8 replacement line spools and 2 spare cap covers. Each spool is 11 feet in length and 0.065 inch in diameter. The cap is designed to fit the replacement spool.