String Trimmer Line .155 Inch Weed Eater String Heavy Duty for Most Electric Trimmers,Commercial Trimmer Line,Stihl Weed Eater String (135 FT)

What It Is

This .155-inch diameter string trimmer line is a heavy-duty, round replacement line designed for most electric and gas trimmers, including Stihl models. It’s built for commercial-grade cutting of thick weeds and overgrowth, not light grass trimming.

Fitment & Compatibility

Before buying, check your trimmer’s manual or spool for the maximum line diameter it can accept. .155-inch is thick—common on Stihl, Echo, Husqvarna, and Ryobi commercial/consumer trimmers, but some lightweight electric trimmers (e.g., Black+Decker 20V) may only take .080 or .095. Also verify line length capacity; 135 ft fits most standard spools, but bump-feed heads with small chambers may need cutting. This is aftermarket, not OEM Stihl or Echo branded, but works in any trimmer that accepts .155 line.

Key Things to Know

• Installation: Easy—wind onto spool following directional arrows. No tools needed, but thicker line may be stiffer to coil evenly.
• Durability: Heavy-duty means less breakage against fences or rocks, but it’s round, not serrated or star-shaped, so it cuts cleanly but slower on dense brush.
• Compatibility gotcha: Some trimmers with auto-feed heads (e.g., older Stihl AutoCut) may jam with .155; stick to .105–.130 for those.
• Length: 135 ft is generous for a single spool refill or multiple full reloads; no need to buy two.

Should You Buy It

Buy this if you have a mid-to-high-power electric or gas trimmer that accepts .155 line and you regularly cut thick weeds, briars, or along rough edges. Skip it if you only trim grass or your trimmer specifies a smaller diameter—you’ll risk overloading the motor or jamming the head.