Compatibility: 0.065 String Trimmer for Ryobi One+ AC14RL3A Spools, 0.065" for Auto Feeding Spools for Ryobi 18V, 24V, and 40V Cordless Trimmers - Spool Compatible with Ryobi One+ Original Model Part # AC14RL3A and Cap Compatible with 522994001, 3411546-7G, AC14HCA. Features:1. High Efficiency: The aerodynamic shape allows for less dragging for more efficient cuts, the automatic spool replacement feeding system eliminates the time spent manually winding string trimmers,2. Use precautions-strong centrifugal force and fast cutting during use, we recommend wearing eye protection and long pants to avoid unnecessary injury.3. This cordless weed cartridge is only suitable for delicate weed grass. Strong weeds are recommended to use pruning blades. Specification:Color: Black + Blue Material: Plastic Package Included:6pcs*Weeder Spool, 1pcs *cover. Only the above package content, other products are not included. Note: Please allow 0.5-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!