AC053N1FB Replacement Serrated Blades for RYOBI 3-in-1 for Fixed String Trimmer Head - for Lawn Trimming & Garden Upkeep.(10-Pack)

What It Is

These are serrated replacement blades for RYOBI 3-in-1 fixed string trimmer heads, designed for cutting thick weeds and grass in lawn trimming and garden upkeep. The 10-pack provides multiple spares for frequent use.

Fitment & Compatibility

• Exact fit: Works only with RYOBI 3-in-1 fixed string trimmer heads (common on models like RY40210, RY40220, RY40230, RY40240, and similar). Do not use with bump-feed or universal heads.
• Check model number: Look for “3-in-1” on your trimmer head or manual; these blades are not compatible with standard string-only heads.
• Measurements: Each blade is approximately 1.5 inches long with a central mounting hole; verify your head’s blade slot depth and pin size (typically 1/4-inch).
• OEM vs aftermarket: These are aftermarket replacements, not RYOBI OEM. Ensure your head uses serrated blades (some 3-in-1 heads accept only plastic or metal blades).

Key Things to Know

• Installation difficulty: Easy – snap blades into head slots, align with pins, and secure. No tools required.
• Quality: Serrated edges cut thicker weeds better than string, but blades may dull faster on rocky or dirty terrain. Expect 2–4 uses per blade.
• Common gotcha: If your trimmer head has a plastic blade retainer, check for cracks before installing – broken retainers cause blade ejection.
• Safety: Always wear eye protection; blades can shatter if hitting hard objects.

Should You Buy It

Buy if you have a RYOBI 3-in-1 fixed head and frequently cut heavy weeds or brush. The 10-pack is cost-effective for high-volume trimming, but if you rarely hit thick growth, standard string may be simpler and cheaper.