Genuine Echo Black Diamond LINE .105 3LB Spool 708FT 330105073

What It Is

This is a genuine Echo Black Diamond .105-inch trimmer line spool, containing 708 feet of line on a 3-pound spool (part #330105073). It’s designed for heavy-duty trimming in commercial or residential use, ideal for clearing thick weeds, brush, and overgrown grass.

Fitment & Compatibility

• Line diameter: .105 inch (2.7 mm) – fits most standard gas trimmers with .080 to .105 line capacity. Check your trimmer’s max line size in the manual.
• Spool type: Bump-feed or fixed-line heads that accept pre-wound spools. Not for curved-shaft electric trimmers with narrower line limits.
• Brand fit: Genuine Echo part, but compatible with many brands (Husqvarna, Stihl, Ryobi, etc.) if the spool fits the head. Measure your existing spool’s diameter and height.
• OEM vs aftermarket: This is OEM Echo – direct replacement for Echo trimmers (e.g., SRM-225, PAS-225, etc.). For other brands, verify spool dimensions (approx. 3.5” diameter x 2” tall).
• Check before buying: Confirm your trimmer head accepts .105 line (some heads max at .095). Also ensure your head uses a pre-wound spool, not refillable line.

Key Things to Know

• Quality: Black Diamond line is co-polymer with a wear-resistant coating – lasts significantly longer than standard round line, especially on abrasive surfaces like concrete or gravel.
• Installation: Pre-wound spool – just drop in and thread the line through the head. No winding or measuring needed. Takes about 2 minutes.
• Common gotcha: .105 line is thicker than most homeowner trimmers handle. If your trimmer struggles to feed or bogs down, switch to .095 or .080 line. This spool is best for 30cc+ engines.
• Storage: The 3-pound spool is large – ensure you have room to store it. It’s a bulk buy, not a single-use pack.

Should You Buy It

Buy this if you have a commercial-grade gas trimmer (25cc or larger) and need a long-lasting, heavy-duty line for tough weeds or frequent trimming. It’s overkill for light lawn edges or electric trimmers – you’ll waste money and strain the motor. For serious users, the durability and 708-foot length make it a solid value.