String Trimmer Line, 330ft 0.105" for Black Diamond Trimmer Weed Eater String Replacement, Premium Nylon Universal, Professional Twisted Weed Wacker String with Built-in Line Cutter (Upgraded version)

What It Is

This is a 330-foot spool of 0.105-inch diameter twisted nylon string trimmer line, designed for gas, electric, and battery-powered weed eaters. It’s marketed as a professional-grade replacement for Black Diamond trimmers and other standard head types, with a built-in line cutter on the spool for quick length adjustments.

Fitment & Compatibility

• Line diameter: 0.105 inches – fits most standard trimmer heads that accept this size, but check your manual or existing line for exact diameter. Too thick may jam, too thin may snap.
• Spool length: 330 feet – enough for multiple refills. Works with bump-feed, fixed-head, and automatic-feed trimmers if the head can hold a spool of this size.
• Brand/model: Listed for Black Diamond trimmers, but universal nylon line fits many brands (Echo, Stihl, Husqvarna, Ryobi, etc.) if the diameter matches.
• OEM vs aftermarket: Aftermarket – not OEM; verify your trimmer’s line diameter and head type before buying. No adapter or specific spool is included.

Key Things to Know

• Material: Twisted nylon is more durable and less prone to melting than standard round line, but can split on very thick weeds or against hard surfaces.
• Installation: Easy to spool – the built-in cutter on the spool simplifies trimming; no tools needed for most heads. However, if your head uses a specific spool design, you may need to re-spool manually.
• Common gotchas: The 0.105” size is thicker than many homeowner lines (often 0.080–0.095”), so it may not fit compact or mini-trimmer heads. Check your head’s maximum line diameter. Also, twisted line can be noisier and slightly heavier than round.
• Performance: Good for light to medium-duty trimming (grass, weeds) but may struggle with dense brush or heavy-duty commercial use compared to thicker 0.095–0.130” options.

Should You Buy It

Buy this if you need a large, budget-friendly spool of 0.105-inch twisted line for a standard trimmer and want the convenience of a built-in cutter. It’s a solid choice for homeowners with medium-sized yards, but skip it if your trimmer requires a smaller diameter or if you frequently cut thick, woody vegetation.