Dunhil 7 inch 16T 7" x 16T Chainsaw Tooth Brush Cutter Blades Metal Brush Cutter Blade with 2 Set Adapter Kits for Weed Eater, Cutter, Trimmer

What It Is

This is a 7-inch, 16-tooth chainsaw-style brush cutter blade designed for heavy vegetation like thick weeds, brush, and saplings. It mounts on string trimmers and weed eaters to upgrade them from light grass cutting to serious clearing work.

Fitment & Compatibility

• Measure your existing blade or trimmer head: The blade is 7 inches in diameter with a 16-tooth cutting edge and a standard 25.4mm (1 inch) center hole. Measure your trimmer’s arbor shaft diameter and ensure it matches.
• Check adapter kits: Includes 2 sets of adapters for common shaft sizes (likely 20mm and 25.4mm). Verify your trimmer’s shaft size before buying—most straight-shaft trimmers use 25.4mm, but curved-shaft models often use 20mm.
• Power rating: This blade is for use on gas trimmers with at least 30cc engines. Electric or battery trimmers usually lack the torque to spin it safely.
• Safety requirement: Your trimmer must have a metal blade-ready head (with a blade nut/retainer) and a debris shield. Do not use on trimmers designed only for string.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the string head, install the adapter and blade, and torque the nut to spec (typically 20-30 ft-lbs). Requires a blade nut wrench or socket.
• Balance & vibration: Inspect the blade for balance before use. Unbalanced blades cause excessive vibration, damaging the trimmer head and reducing control.
• Dullness: Chainsaw teeth dull quickly in sandy or rocky soil. Expect to sharpen or replace after 2-4 hours of heavy use. Use a file or grinder to restore edges.
• Safety: This blade can kick back violently if it hits a solid object. Always wear chaps, eye protection, and a full-face shield. Keep bystanders 50+ feet away.

Should You Buy It

Buy this if you have a gas trimmer with at least 30cc and need to clear thick brush, brambles, or small saplings. It’s a solid budget option for heavy-duty clearing, but not for light grass trimming. Avoid if your trimmer is underpowered, electric, or if you’re not comfortable with kickback risks.