9" x 20T 2-Set Carbon Steel Round Chainsaw Tooth Brush Blades - Universal Adapter Kit with 3 Round Files, Compatible with Brush Cutter, Trimmer, Weed Eater, Husqvarna, Stihl, Ego

What It Is

This is a set of three 9-inch diameter, 20-tooth carbon steel brush blades designed for clearing dense weeds, brush, and small saplings. They replace standard string trimmer heads or mower blades on brush cutters, trimmers, and weed eaters. The kit includes a universal adapter and three round files for sharpening.

Fitment & Compatibility

Before buying, check that your machine accepts a 9-inch blade (common on most gas and electric brush cutters). The universal adapter fits shafts with 20mm or 25.4mm (1-inch) arbor holes—measure your existing blade’s center hole. This kit is not specific to any single brand; it works with Husqvarna, Stihl, Ego, and other brush cutters that use a standard blade mount. It does not fit standard lawn mower decks (e.g., 20-inch push mowers) or trimmers with a fixed string head only. Verify your trimmer’s shaft diameter and that the blade guard can accommodate a 9-inch blade.

Key Things to Know

• Installation difficulty: Moderate. You’ll need a wrench to remove the string head and install the adapter. No special skills required, but follow the manual for torque specs.
• Material quality: Carbon steel is durable but will dull faster on rocky or sandy soil. The included round files let you sharpen the teeth—expect to do so every few hours of heavy use.
• Safety note: These blades are aggressive. Wear heavy gloves, eye protection, and long pants. Kickback risk is higher than with string; avoid cutting near fences or rocks.
• Adapter kit: The universal adapter may require shims or spacers for a snug fit on some machines. Test for wobble before use—vibration can damage the gearbox.

Should You Buy It

Buy this if you regularly clear thick brush, blackberries, or saplings and want a durable, affordable blade upgrade for your gas or electric brush cutter. It’s a good value for the price and includes sharpening tools, but skip it if you only cut grass or have a lightweight electric trimmer—you’ll be safer with a string head.