9" x 20T Chainsaw Brush Cutter Blades, WeedEater Blades, Brush Cutter String Trimmer Blades, 1"/25MM Arbor(3 Blades)

What It Is

This is a set of three 9-inch, 20-tooth brush cutter blades designed for clearing heavy weeds, thick brush, and saplings. They replace standard string trimmer heads on compatible weed eaters and brush cutters.

Fitment & Compatibility

Before buying, measure your trimmer’s arbor hole—these blades require a 1-inch (25mm) arbor. They will not fit machines with smaller 20mm or 7/8-inch arbors. Check your trimmer’s model number against the manufacturer’s approved blade list; common brands like WeedEater, Echo, and Husqvarna often accept them if the arbor matches. Deck size is irrelevant (these are for handheld trimmers, not ride-ons). Ensure your trimmer’s shaft and head can safely handle a 9-inch blade (some lightweight trimmers may lack torque or safety guards).

Key Things to Know

• Quality: These are aftermarket steel blades—sharp out of the box but may dull faster with heavy rocks or dirt. Not as durable as OEM carbide-tipped options.
• Installation: Easy if your trimmer has a standard blade-ready head (usually a nut/washer system). You’ll need a wrench and lock-up tool; torque to manufacturer specs (typically 20-30 ft-lbs). Avoid overtightening.
• Gotchas: The 20-tooth design cuts aggressively but can grab and kick back on thick brush—use a brush cutter harness. These blades are not for grass or light weeds; they’ll tear up a lawn.
• Safety: Always wear eye and leg protection. The blade can throw debris up to 50 feet. Never use on a trimmer without a blade guard.

Should You Buy It

If you need a budget-friendly, multi-pack option for occasional heavy brush clearing on a compatible trimmer with a 1-inch arbor, these work well. Skip them if you’re a pro needing long-lasting carbide blades or if your trimmer has a smaller arbor—get a single higher-quality blade instead.