8" x 80T 8-Inch 80 Tooth Carbide Tip Circular Saw Brush Cutter Trimmer Weed Eater Blade (2 Pack)

What It Is

This is a set of two 8-inch, 80-tooth carbide-tipped circular saw blades designed to replace standard string trimmer heads or brush cutter blades on gas-powered brush cutters, weed eaters, and line trimmers. They are intended for heavy clearing of dense brush, saplings, brambles, and thick grass—not for mowing lawns.

Fitment & Compatibility

Before buying, verify these three things:

1. Arbor size: This blade uses a standard 1-inch (25.4 mm) arbor hole. Confirm your trimmer’s output shaft diameter matches. Most straight-shaft brush cutters accept this, but curved-shaft models often require a smaller arbor.
2. Blade-capable trimmer: Your trimmer must be rated for a blade (not just string). Look for a metal blade guard and a solid steel drive shaft. Check your owner’s manual under “approved attachments” or “blade use.”
3. Speed rating: Ensure your trimmer’s max RPM does not exceed the blade’s rated speed (typically 10,000–12,000 RPM). Over-speeding can cause blade failure.

This is an aftermarket part—not OEM from Stihl, Echo, Husqvarna, etc. It will fit most standard brush cutter heads, but you may need a specific blade nut or washer kit for your brand.

Key Things to Know

• Quality: Carbide tips are durable and stay sharp longer than steel blades, but these are budget-priced. Expect good performance on light-to-medium brush but not professional-grade longevity.
• Installation difficulty: Easy if you have a wrench and can lock the trimmer head. Use the correct blade nut and tighten to manufacturer torque specs. Always wear heavy gloves—carbide tips are sharp.
• Gotcha: These blades are not for use on standard lawn mowers or zero-turn mowers. They are designed only for hand-held brush cutters/trimmers. Also, they do not include a blade nut or washer—check your trimmer’s hardware.
• Safety: A blade can kick back violently if it hits a rock or stump. Always use a full-face shield, gloves, and heavy pants. Never use without a proper blade guard.

Should You Buy It

Buy this if you have a straight-shaft, blade-capable gas trimmer and need a low-cost, multi-pack solution for occasional clearing of thick weeds, blackberry vines, or small saplings. Skip it if you need a commercial-grade blade for daily professional use, or if your trimmer is not rated for a metal blade.