8 Inch 80T Carbide Tip Blade with Washer Adapter Brush Cutter Trimmer Weed Eater Blade

What It Is

This is an 8-inch, 80-tooth carbide-tipped blade designed for brush cutters, string trimmers, and weed eaters. It replaces standard nylon line or smaller blades for heavy-duty clearing of thick brush, briars, saplings, and woody weeds.

Fitment & Compatibility

Before buying, check three things:

1. Shaft size & type: Most straight-shaft trimmers accept this blade, but curved-shaft models often won’t. Measure your shaft’s arbor hole (usually 20mm, 25.4mm, or 1-inch) – the included washer adapter helps fit multiple sizes, but confirm your specific hole diameter.
2. Trimmer head design: This blade requires a fixed-mount head or a dedicated blade adapter. It will not work on standard bump-feed heads. Check your trimmer’s manual for “blade-capable” or “brush cutter” compatibility.
3. Guard & RPM rating: Ensure your trimmer’s guard is rated for metal blades (usually marked). The blade is rated for max 8,000–10,000 RPM; verify your trimmer’s no-load speed doesn’t exceed that.

Key Things to Know

• Quality vs. price: At $12.99, this is a budget carbide blade. Carbide tips are hard and hold an edge longer than steel, but the tips can chip on rocks or hidden metal. Not for professional daily abuse.
• Installation difficulty: Moderate. You’ll need a wrench to remove the trimmer head, then install the blade with the included washer adapter and lock nut. Tighten securely – a loose blade is dangerous.
• Safety first: Always wear eye protection, long pants, and boots. The blade can throw debris with force. Never use on a trimmer without a metal-blade-rated guard.
• Balance check: After use, inspect for bent or chipped teeth. An unbalanced blade vibrates badly and can damage the trimmer shaft or gearbox.

Should You Buy It

Buy this if you need a cheap, effective blade for occasional heavy brush clearing on a straight-shaft trimmer and you’re comfortable with basic installation. Skip it if you’re a pro doing daily commercial work, or if your trimmer has a curved shaft or bump-feed head that can’t mount a metal blade.