Arnold Xtreme .105-Inch x 660-Foot Professional Grade String Trimmer Line

What It Is

This is a heavy-duty, professional-grade trimmer line designed for high-volume commercial or large-property use. It fits most gas and battery-powered string trimmers that accept .105-inch diameter line, offering extreme durability for thick weeds, brush, and roadside vegetation.

Fitment & Compatibility

• Line diameter: .105-inch (2.7mm). Confirm your trimmer’s maximum line size in the manual or on the head. Using a larger line than recommended can damage the head or engine.
• Spool type: This is bulk replacement line, not a pre-wound spool. You’ll need to cut and load it into your trimmer’s existing spool or use a bump-feed head that accepts bulk line.
• Brand/model: Universal fit for any trimmer that accepts .105-inch line (e.g., Echo, Stihl, Husqvarna, Ryobi, Troy-Bilt, etc.). No proprietary attachment required.
• OEM vs aftermarket: Aftermarket replacement. Works as well as OEM line in most cases, but always verify your trimmer’s line diameter compatibility first.

Key Things to Know

• Extreme durability: The multi-layered construction resists snapping and fraying, even against concrete, stone, or heavy brush. Expect longer run time between reloads.
• Installation difficulty: Moderate. Winding 660 feet onto a spool can be tedious. Use a line winder tool or follow the trimmer head’s directional arrows to avoid tangles.
• Common gotcha: The .105-inch line is thick—some smaller electric trimmers (especially 12- or 18-volt) may not have enough power to spin it effectively. Stick to gas trimmers or high-torque battery models (40V+).
• Storage: Keep the line in a cool, dry place to prevent brittleness. UV exposure can weaken it over time.

Should You Buy It

Buy this if you’re a pro landscaper or homeowner with several acres and a heavy-duty gas trimmer—it’ll save you money per foot compared to pre-wound spools and handle the toughest jobs without constant line breaks. Skip it if you have a small electric trimmer or only do light trimming; a thinner, cheaper line will be easier to load and less wasteful.