General description The Pink 10 Packs Replacement Spool for Thumb Trimmer is designed for use with Ryobi One+ AC14RL3A and is compatible with various models of Ryobi cordless trimmers, including 18V, 24V, and 40V. This product includes 8 replacement spools and 2 trimmer caps, ensuring you have everything you need for efficient trimming. Technical specifications Spool diameter: φ56*25mm Straw rope length: 3.3M Straw rope diameter: φ1.65mm Material: ABS and polyamide nylon Installation Step 1: Stop the motor and unplug the tool. Step 2: Replace the spool in the cutting head. Step 3: Align the retainer with the slot on the outside of the head. Step 4: Cover the cap from the mower. Usage Designed for cutting soft weeds only. For hard and strong weeds, use blades to cut. Ensure small parts are kept away from children under 3 years due to choking hazard.