Compatibility: Compatible with Ryobi One+ AC14RL3A, suitable for multiple Ryobi cordless trimmer models including Ryobi RLT1825M20S 18V ONE+, Ryobi OLT1832 18V ONE+, and RYOBI RLT183215 18V ONE+ (18V, 24V, 40V). Strimmer Spool Replacement: Perfect replacement for model AC14RL3A. Includes 2 pcs trimmer spool caps, 33mm in height and 75mm in diameter. High Quality: The strimmer spool cap is made of high-quality ABS and nylon resin material, providing durability and efficient grass cutting performance. Easy to Install: Tool-free installation; press the spool cap and rotate it to the appropriate position according to the arrow to lock it securely. Convenient and quick to set up. High Precision: Designed with a 0.3mm tolerance compared to the original spool cover. Multiple tests ensure a precise fit for most Ryobi One+ 18V, 24V, and 40V lawn mowers. Prevents line jamming, cover detachment, and sizing issues.