Oregon TerraMax .105" Diameter String Trimmer Line, 1lb Donut (24-305)

What It Is

The Oregon TerraMax .105" Diameter String Trimmer Line (24-305) is a 1lb donut spool of aftermarket trimmer line designed for heavy-duty trimming. It’s ideal for clearing thick weeds, briars, and overgrown grass on residential or commercial properties.

Fitment & Compatibility

• Diameter: .105” (2.7mm) – fits most gas and electric trimmers that accept line between .095” and .110”. Check your trimmer’s manual or bump head for max line diameter.
• Brand/Model: Universal fit – works with EGO, Stihl, Husqvarna, Ryobi, and others. However, EGO’s Load & Go heads (e.g., PH1400, PH1500) require .095” or .105” line; this spool is compatible but may need manual winding (no pre-wound spool included).
• OEM vs Aftermarket: Aftermarket. Not a direct OEM replacement for EGO’s pre-wound spools; you must cut and load the line yourself.
• Measurement: 1lb donut yields about 100 feet of line. Verify your bump head can hold at least 10-12 feet per side (most can).

Key Things to Know

• Quality: Multi-lobe, serrated edge design cuts faster and lasts longer than round line. Less breaking on impact with fences or rocks.
• Installation: Moderate difficulty – you’ll need to cut two equal lengths (10-15 ft each) and hand-wind onto spool. No pre-wound spool included, so expect 5-10 minutes of setup.
• Gotcha: .105” line is thicker than standard .080” or .095”. It may overload smaller battery trimmers (e.g., EGO ST1200) or cause slower RPM if the motor isn’t powerful enough. Stick to .095” for lightweight electrics.
• Storage: Donut shape can deform in heat; keep in a cool, dry place to avoid tangling.

Should You Buy It

Buy this if you have a mid-to-large gas or high-voltage electric trimmer (EGO 56V, Stihl, Husqvarna) and regularly tackle thick weeds or brush. Skip it for light-duty electric trimmers or if you prefer pre-wound spools for quick reloads.