155 Trimmer Line Heavy Duty Square, 155 Weed Eater String, String Trimmer Line .155, Commercial Weed Trimmer String 155, Nylon Weed Wacker String .155Inch-478Ft-5Lb Fits Most String Trimmer(Square)

What It Is

This is a .155-inch heavy-duty square trimmer line, designed for commercial-grade weed eaters and string trimmers. It’s a 5-pound spool (478 feet total) of durable nylon line meant for thick grass, brush, and heavy vegetation.

Fitment & Compatibility

Before buying, confirm your trimmer accepts .155-inch line (most gas trimmers do, but check your manual or existing line diameter). This square profile fits standard heads that accept pre-cut or bulk line—no special adapter needed. It’s aftermarket, not OEM-specific, so it works with brands like Stihl, Echo, Husqvarna, Ryobi, and Craftsman as long as the head can hold .155. Measure your trimmer’s cutting swath (typically 15–18 inches) to ensure the line length matches; this spool provides plenty for multiple reloads. Avoid if your trimmer uses .080 or .095 line—too thick can overload the head.

Key Things to Know

• Quality: Heavy-duty square edge cuts through thick weeds and blackberry vines without snapping easily; nylon is UV-resistant for longer life.
• Installation: Easy—just cut to length, feed through the head, and wind. No tools needed, but wearing gloves prevents cuts from the sharp line.
• Gotcha: .155 is thick; it may cause vibration or bogging on smaller electric trimmers. Check your trimmer’s line capacity (some heads max out at .130).
• Durability: 5-pound spool lasts multiple seasons for most homeowners; commercial users may go through it faster.

Should You Buy It

Buy this if you have a gas-powered trimmer (or high-torque electric) and regularly tackle heavy brush, brambles, or overgrown properties. It’s a solid value for the length and durability, but skip it for light trimming or small electric trimmers that can’t handle the thickness.