Description 【Compatibility】: Compatible with Ryobi One + AC14RL3A. Suitable for multiple Ryobi cordless trimmer models: 18V, 24V, 40V. 【Premium Material】: The replacement trimmer spool line is made of high-quality ABS. Not easy to break, supports fast cutting and a longer service life. 【Convenience and High Efficiency】: Flexible and strong cord for trimming. Allowing the line to stretch and cushion the impact on hard surfaces, the aerodynamic shape allows for less traîBorn for more efficient cuts. 【Auto-Feed Replacement Spool】: Compatible with Ryobi string trimmer and uses centrifugal force to feed the trimmer line as needed. With the auto-loading system, the replacement spool eases the tedious work of manually wound spools. 【Package Includes】: 8 packs of trimmer replacement line spools and 2 packs of replacement cap covers are packed in a package for you. The spool is 11 feet in length and 0.065" in diameter, and the cap fits the replacement spool.