[HIGH QUALITY] - Made of high-quality ABS spool and durable nylon wire. Not easy to break, supports fast cutting and a longer service life, weeds can be cut easily and efficiently. [CONVENIENCE] - The wire design spool reduces air resistance for more efficient cutting. It allows you to reach hard-to-reach lawn edges. The aerodynamic shape allows the line to stretch and cushion the impact on hard surfaces, ensuring less air resistance and more efficient cuts. [MORE CONVENIENT USE AND STORAGE] - The automatic spool change is easy to assemble and use, saving time when rewinding the trimmer. [COMPATIBILITY] - Compatible with Ryobi One + AC14RL3A. Fits multiple Ryobi cordless trimmer models: 18V, 24V, 40V. [SERVICE GUARANTEE] - You will receive 4 replacement spools + 2 replacement caps. The spool is 11 feet long and has a diameter of 0.065, and the cap fits the replacement spool. Material: ABS + Nylon Diameter: 1.65 mm Length: 3.3 meters (11 feet) for each spool, total 20 meters (66 feet)