KAKO 155 Trimmer Line, 155 Weed Eater String, 155 Weed Trimmer Line, Square String Trimmer Line .155 Inch-475 Ft-5 Lb, Commercial Nylon Trimmer Line .155 Fits Most String Trimmers(Square)

What It Is

The KAKO 155 Trimmer Line is a 0.155-inch diameter, square-shaped nylon replacement string for gas and electric string trimmers. It’s designed for heavy-duty residential and light commercial use, such as clearing thick grass, weeds, and light brush.

Fitment & Compatibility

Before buying, confirm your trimmer uses a 0.155-inch line (common on many mid-sized and heavy-duty models). Measure your trimmer’s cutting head spool or check the manual for the maximum line diameter—using a thicker line can overload the engine or damage the head. This square line fits most standard trimmer brands (e.g., Stihl, Husqvarna, Echo, Ryobi, Craftsman, Troy-Bilt) that accept .155 line. It is not compatible with trimmers that require a smaller diameter (e.g., 0.080, 0.095, or 0.105) or those with fixed-line heads that only fit proprietary line. No special adapters needed.

Key Things to Know

• Quality: Commercial-grade nylon is durable and resists breaking, but the square shape can be slightly less flexible than round line—expect a bit more vibration at startup.
• Installation: Moderate difficulty. You’ll need to manually cut and wind the line onto your spool (or pre-cut for bump-feed heads). The 475-foot spool provides many refills.
• Common Gotchas: The line is stiff when new; soak in warm water for 10 minutes to soften before winding. Avoid using in a trimmer that recommends a thinner line—this can cause the head to jam or the engine to stall.
• Performance: Square edges cut faster than round line, but wear down quicker on abrasive surfaces (concrete, rocks). Expect to replace more frequently in high-contact trimming.

Should You Buy It

Buy this if you need a heavy-duty, long-lasting line for frequent trimming of thick weeds or light brush on a mid-to-large gas trimmer that accepts .155 line. It’s a good value for the volume, but skip it if you have a small electric trimmer or a model that requires a thinner line—stick with the manufacturer’s recommended size.