Brush Cutter Blade Set, 2-Set 9" x 20 Teeth Carbon Steel Weedeater Blades, Carbide Tipped Round Chainsaw Tooth Blades with Universal Adapter Kit, Compatible with Trimmer and Weed Eater

What It Is

This is a 9-inch diameter, 20-tooth carbide-tipped brush cutter blade set designed for clearing thick weeds, brush, and small saplings. It replaces standard nylon trimmer line on gas or electric string trimmers and weed eaters, converting them into heavy-duty cutting tools.

Fitment & Compatibility

• Deck size: No deck involved; these mount directly to the trimmer head. Blade diameter is 9 inches—ensure your trimmer’s guard or housing can accommodate this size without interference.
• Shaft type: Requires a straight shaft trimmer (curved shafts usually lack torque and strength). Check your trimmer’s manual or manufacturer specs.
• Adapter kit: Includes a universal adapter with multiple hole patterns and washers. Fits most common trimmer brands (e.g., Echo, Stihl, Husqvarna, Ryobi, Troy-Bilt, Craftsman) but verify your trimmer’s drive shaft diameter (typically 7/16” or 10mm) and whether it uses a left-hand or right-hand thread.
• OEM vs aftermarket: Aftermarket—no OEM part number. Confirm mounting hole size and adapter compatibility if your trimmer uses a proprietary head (e.g., some Ryobi or Worx models).

Key Things to Know

• Installation: Moderate difficulty. You’ll need to remove the trimmer head, install the adapter, and secure the blade with the supplied nut. Always use thread-locker and torque to spec (common range: 15-25 ft-lbs). Reverse thread on many models—check before tightening.
• Safety: Carbide tips are very sharp and brittle. Use a dedicated blade nut, wear heavy gloves, and ensure the trimmer has a debris shield installed. Kickback risk is high—never operate above waist height.
• Performance: Cuts woody stems up to 1-2 inches thick, but dulls faster on soil or rocks. Carbide tips can chip if struck hard; avoid hitting stones or concrete.
• Maintenance: Sharpen only with a diamond file or replace the set ($25.50 for two blades). Do not use a bench grinder—it will ruin the carbide.

Should You Buy It

If you regularly clear heavy brush, briars, or saplings on a straight-shaft trimmer and want a budget-friendly alternative to OEM blades, this set is a solid value. It’s not for light grass trimming or curved-shaft trimmers—stick to string line for those jobs.