Arnold .155-Inch x 109-Foot Xtreme Professional Grade Trimmer Line

What It Is

This is a .155-inch diameter, 109-foot spool of professional-grade trimmer line designed for heavy-duty clearing, commercial use, or large residential properties with thick weeds and brush. It fits most standard gas and electric string trimmers that accept .155-inch line.

Fitment & Compatibility

Before buying, confirm your trimmer’s line diameter—.155-inch is thicker than standard .095 or .105 line, so it will only work with trimmers that specify .155-inch or larger. Check your owner’s manual or the trimmer head for a stamped diameter range. This line is universal for all brands (Stihl, Echo, Husqvarna, Ryobi, etc.) as long as the head can accommodate the gauge. It is aftermarket, not OEM-specific, but meets or exceeds OEM specs for strength and durability. No deck size or model number check is needed—just line diameter and head compatibility.

Key Things to Know

• Durability: Xtreme Professional Grade means it’s reinforced for heavy brush and edging, but it is stiffer than standard round line—may not feed smoothly in some bump-feed heads without trimming the end.
• Installation: Easy to spool manually or with a line winder; no special tools required. Cut to length per your trimmer head instructions (often 15-20 feet per slot).
• Gotcha: .155-inch is too thick for many homeowner-grade trimmers (e.g., basic Ryobi or Black+Decker). If your trimmer uses .095 or .105, this line will jam or break the head. Double-check before purchase.
• Value: 109 feet at this price is cost-effective compared to smaller spools, but you’ll need a storage bag or container to keep it from tangling.

Should You Buy It

Buy this if you have a commercial or heavy-duty trimmer that accepts .155-inch line and you regularly cut thick grass, blackberry vines, or saplings. It’s overkill for light trimming on a small lawn—stick with thinner line for that.