General description The 10 Pack Replacement Spools for Ryobi Thumb Trimmer are designed for compatibility with the Ryobi One+ AC14RL3A Cordless Trimmer and other Ryobi cordless trimmer models (18V, 24V, 40V). Made from high-quality ABS, these spools are durable and provide fast cutting with a longer service life. The package includes 8 replacement spools and 2 trimmer caps. 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 engine and brake the cover. Step 2: Put the spool back into the trimmer head. Step 3: Align the retainer with the ground outside the head. Step 4: Close the trimmer cover. Unplug the tool before changing, installing, or removing accessories. Usage Use the replacement spools on soft weeds only. For tougher weeds, it is recommended to use a razor blade to cut them. Other information There is a choking hazard; small parts should be kept away from