9" x 20T Chainsaw Tooth Brush Cutter Blades, 9" x 36 Teeth Carbide Tipped Blades, 10" x 80T Carbide Tip Blades,Trimmer Blades,1'' / 2.54MM Arbor Size (3 Blades with Adaptor Kits)

What It Is

This is a multi-blade kit for converting a standard string trimmer into a brush cutter. It includes three blade types—a 9" x 20-tooth chainsaw-style blade, a 9" x 36-tooth carbide-tipped blade, and a 10" x 80-tooth carbide-tip blade—plus adapter kits. Designed for clearing heavy weeds, thick brush, saplings, and brambles where string trimmer line would quickly fail.

Fitment & Compatibility

• Arbor size: All blades use a 1-inch (25.4mm) center hole. This fits most straight-shaft gas trimmers with a standard 1-inch arbor, but curved-shaft trimmers or those with smaller arbors (e.g., 20mm, 7/8") will not work without additional adapters.
• Blade diameter: 9" and 10" blades require a trimmer head rated for that size. Check your trimmer’s manual for maximum blade diameter—most straight-shaft trimmers handle up to 10", but some consumer models are limited to 8".
• Adapter kits: Included adapters may not fit every brand. Common fits: Husqvarna, Stihl, Echo, Ryobi, and Craftsman straight-shaft models. Verify your trimmer’s shaft type (straight vs. curved) and adapter compatibility before purchase.
• Not for zero-turn mowers, lawn tractors, or walk-behind mowers—these are strictly for handheld string trimmers.

Key Things to Know

• Installation difficulty: Moderate. You must remove the string head and install the blade with the included nut, washer, and lock washer. A torque wrench (recommended 20-30 ft-lbs) ensures proper tightness.
• Safety: Always use a dedicated trimmer blade guard (not the string head guard) and wear chaps/gloves. Kickback risk is high with the 80-tooth carbide blade.
• Durability: Carbide tips last much longer than standard steel, but the 20-tooth chainsaw blade dulls quickly on soil contact. The 80-tooth blade is best for dense, woody material.
• Common gotcha: The included adapters may be loose on some trimmers—check for wobble before use. If wobble occurs, you may need a specific arbor adapter for your brand.

Should You Buy It

This kit is right for homeowners with a straight-shaft gas trimmer who need a versatile, budget-friendly way to clear heavy brush without buying a dedicated brush cutter. It’s a solid value if you confirm fitment first, but not for professionals or anyone with a curved-shaft trimmer.