Grass Gator 4690 3-Pack Replacement Extra Heavy Duty Brush Cutter Blade for Grass Trimmer Head Model 4680, Black Solid Steel

What It Is

This is a 3-pack of extra-heavy-duty brush cutter blades designed for the Grass Gator 4680 trimmer head. They use a proprietary mounting system (not universal) and are meant for clearing thick weeds, briars, and light brush—not standard grass trimming.

Fitment & Compatibility

• Exact fit: Grass Gator model 4680 trimmer head only. Will not fit any other head or standard trimmer shaft.
• No deck size: These are for string trimmer heads, not mower decks.
• OEM vs aftermarket: These are genuine Grass Gator replacement blades for the 4680 head. No cross-compatibility with other brands (e.g., Oregon, Husqvarna).
• Check before buying: Confirm your trimmer head is a Grass Gator 4680. If you have a different model, this won’t work. Measure the head diameter (3.5” for 4680) and ensure the blade slots align.

Key Things to Know

• Installation: Easy—no tools required. Blades slide into the head’s slots and lock with a twist. Takes under 30 seconds per blade.
• Durability: Solid steel, holds up well against thick brush. Blades will dull over time but last longer than nylon string in heavy use.
• Safety: Treat like a metal blade—kickback risk. Use full eye/leg protection. Never run above recommended RPM.
• Gotcha: These are replacement blades only—you must already own the Grass Gator 4680 head. They are not standalone trimmer heads.

Should You Buy It

Buy this if you already own a Grass Gator 4680 head and need to clear heavy weeds, briars, or saplings. It’s a cheap, effective way to keep the head working without buying a whole new system. Skip if you have a different trimmer head or only do light grass trimming—standard line will be cheaper and safer.