0.155 Inch 1 Pound Square String Trimmer Line Weed Eater 78 Feet/24 Meters

What It Is

This is a 0.155-inch diameter, 1-pound spool of square-shaped trimmer line (78 feet total) designed for light-to-medium duty trimming around grass and small weeds. It fits most standard gas, electric, and battery-powered string trimmers that accept 0.155-inch or smaller line.

Fitment & Compatibility

• Diameter check: 0.155 inch (4.0 mm) – confirm your trimmer’s maximum line size in the manual or on the spool housing. If your trimmer requires 0.080–0.130 inch, this line will be too thick and may not feed or fit the spool.
• Shape: Square profile – works best in bump-feed or auto-feed heads; round-line heads may struggle with feeding.
• Brand/model: Universal fit for most trimmers (e.g., Echo, Husqvarna, Stihl, Ryobi, Troy-Bilt) as long as diameter matches. Not compatible with some straight-shaft trimmers that require proprietary spools.
• Length: 78 feet per pound – enough for 3–4 full reloads on a standard head. Measure your spool’s capacity (usually 20–30 feet) before buying.

Key Things to Know

• Quality: Square edge gives better cutting action than round line for light weeds, but it wears faster on abrasive surfaces (concrete, rocks). Expect 1–2 sessions per load.
• Installation: Easy to hand-wind onto most spools. No special tools needed – just feed through the eyelet and wind evenly. Avoid overlapping or kinking.
• Common gotcha: If your trimmer uses a fixed-line head (e.g., Ryobi 18V), you’ll need to cut individual 10–12 inch pieces. This spool is continuous, so you’ll waste some.
• Price vs. value: At $12.99, it’s mid-range. Not the cheapest, but better durability than generic round line. Pound brand is an aftermarket option – no OEM warranty implications.

Should You Buy It

Buy this if you have a standard 0.155-inch trimmer and need a reliable, square-shaped line for regular lawn trimming (grass, small weeds) without heavy-duty brush or rocky edges. It’s a solid value for the price, but skip it if your trimmer requires thinner line or you mainly cut thick brush.