Oregon 20-036 Magnum Gatorline Supertwist Trimmer Line, .105-Inch, 5 Pounds

What It Is

This is a 5-pound spool of .105-inch (2.7mm) twisted square trimmer line, designed for heavy-duty clearing tasks on gas-powered string trimmers. It’s suited for commercial landscapers or homeowners with thick weeds, brambles, or light brush.

Fitment & Compatibility

• Line diameter: .105-inch. Fits trimmers that accept line up to .105-inch (check your trimmer head’s max line size). Common in many gas trimmers (e.g., Echo, Stihl, Husqvarna, Ryobi, EGO) but not all—verify your head can load this gauge.
• Spool size: 5-pound bulk spool. You’ll need to cut and load individual lengths; not a pre-wound spool for quick-change heads.
• OEM vs aftermarket: Oregon is a reputable aftermarket brand. Works as a direct replacement for most OEM .105-inch lines, but check your trimmer’s manual for recommended line diameter.
• Measure before buying: Confirm your trimmer head’s line diameter limit (often stamped on the head or in manual). Using too-thick line can damage the head or engine.

Key Things to Know

• Performance: Twisted square shape cuts faster than round line but is less durable on rocks or concrete. Best for grass and weeds, not edging.
• Installation: Moderate difficulty—bulk line requires cutting to length (typically 10-15 feet per reload) and manual winding. Not for quick-load systems.
• Durability: .105-inch is heavy-duty for commercial use, but the Supertwist design wears faster than thicker .130-inch or .155-inch lines. Expect to reload more often in abrasive conditions.
• Common gotcha: This line is stiffer than standard round line; it may not feed smoothly in trimmer heads with narrow exit holes or weak spring tension. Test a short piece first.

Should You Buy It

Buy this if you need a cost-effective bulk line for heavy weed clearing on a gas trimmer that accepts .105-inch line, and you don’t mind manual winding. Skip it if you prefer pre-wound spools, need a line for edging or rocky areas, or your trimmer head is picky about stiff line.