ABS Spool and Nylon Line: The trimmer replacement line spool line was made of premium raw materials, strong enough ABS spool, flexible nylon line string, not easy to break , allowing for fast cutting and longer life. Compatibility: COMPATIBLE WITH Ryobi One+ EDGER - 18V, 24V, 40V. Spool compatible with the original model Ryobi One+ part # AC14RL3A and cap compatible with 522994001, 3411546-7G, AC14HCA. Convenience and high efficiency: allowing the line to stretch and cushion impact with hard surfaces, the aerodynamic shape allows less drag for more efficient cuts. Easy to use and install Tool-free installation Pre-wound, slides in and out of the trimmer for easy use. Precautions for use: Strong centrifugal force and fast cutting during use, it is recommended to wear protective glasses and long pants to avoid unnecessary injuries. And this cordless weeding parts refill is only suitable for soft weeds. It will be recommended to use blades to cut strong weeds. Size: 0.065 inch cordless grass trimmer spool diameter to perfectly fit the line hole. 11 foot spool line length provides a wider mowing range.