THTEN ACFHRL2 Weed Eater Bladed Head Spool Line Compatible with Ryobi 18V, 24V, and 40V String Trimmers, Fits for RY40210, RY40210A with 6 Replacement Blades

What It Is

This is a replacement spool and blade set for Ryobi 18V, 24V, and 40V string trimmers. It converts your trimmer from string to a bladed cutting system, designed for heavy weeds and brush.

Fitment & Compatibility

Check your trimmer model number before buying. Confirmed fits: Ryobi RY40210 and RY40210A. It also works with most 18V (RY40200, RY40220), 24V (RY40230), and 40V (RY40460, RY40600) models. Measure the spool shaft diameter—this uses a 0.5-inch center hole. Not compatible with gas trimmers or models with a fixed head (no bump-feed). Verify your trimmer uses a standard bump-feed head; if it has a dedicated string-only head, you may need an adapter.

Key Things to Know

• Installation difficulty: Moderate. You must remove the old spool, trimmer head cover, and line. Follow the included diagram—reverse-threaded screws can strip easily.
• Blade durability: The 6 included blades are plastic with metal edges. They handle thick weeds but won’t last through rocks or concrete. Expect to replace blades every 2-3 uses in heavy brush.
• Performance trade-off: Bladed heads cut faster than string but are louder and can throw debris further. Wear eye protection and long pants.
• Common gotcha: The spool housing is slightly taller than stock. On some 18V models, the guard may need trimming or removal for clearance.

Should You Buy It

Buy this if you need to clear heavy weeds, blackberry vines, or saplings on a Ryobi battery trimmer and want faster cutting than string. Avoid it if you trim mostly grass near fences, sidewalks, or flowerbeds—the blades can damage surfaces and plants, and they don’t edge well.