Husqvarna 5 LB Donut Titanium Trimmer Line .105" 639005110

What It Is

This is a 5-pound spool of Husqvarna OEM .105-inch (2.7mm) titanium-infused donut-shaped trimmer line. Designed for heavy-duty commercial or residential trimming—ideal for thick weeds, brush, and edging along fences or walls.

Fitment & Compatibility

• Line diameter: .105" (2.7mm). Only fits trimmer heads that accept this gauge. Check your owner’s manual or the head itself for max line size.
• Donut shape: The line has a square/star profile, not round. Works in most standard bump-feed or fixed-line heads, but may not load easily into some pre-cut line spools. Confirm your head can handle shaped line.
• OEM vs aftermarket: This is genuine Husqvarna part #639005110. Direct fit for Husqvarna trimmers using .105" line (e.g., 128LD, 129L, 130BT, 225L, 325L, 525L series). Also fits many Echo, Stihl, and other brands if line diameter matches—but verify head compatibility.
• Weight: 5 lb spool. Enough for multiple reloads, but heavy. Not for casual homeowners—more for pros or large properties.
• Check before buying: Measure your current line diameter with calipers. Confirm your trimmer head accepts donut-shaped line (some round-line-only heads will jam or feed poorly).

Key Things to Know

• Durability: Titanium coating reduces line wear and breakage vs standard nylon. Lasts 2-3x longer in abrasive conditions (gravel, concrete, roots).
• Installation: No special tools. Load like any spool line—follow your head’s winding pattern. Donut shape may require a slightly looser wind to avoid tangling.
• Noise & debris: The star/donut profile cuts aggressively but throws more debris than round line. Wear eye/leg protection.
• Cost: $73.49 is premium. A 5-lb spool saves per-foot cost vs small packs, but only if you’ll use it before it degrades (store in cool, dry place).

Should You Buy It

Buy this if you have a heavy-duty trimmer that takes .105" line and you regularly cut thick weeds, brush, or against hard surfaces. It’s overkill for light grass trimming—a smaller spool of .080" or .095" round line will be cheaper and easier. Ideal for commercial landscapers or property owners with acres of rough terrain.