ECHO Black Diamond .105" Trimmer Line 217 ft — Square Twisted, Heavy-Duty Cutting

ECHO Black Diamond .105" x 217' trimmer line delivers a square, twisted profile designed for razor-sharp, one-pass cutting of medium to heavy grass and weeds.

If you need a durable replacement line that restores your string trimmer's cutting performance, this OEM ECHO part is engineered to be tough and efficient. The uniquely shaped 4-corner spiral profile slices vegetation cleanly while resisting breakage and wind whipping, so you spend less time reloading and more time working. It fits machines that accept .105" diameter line and comes in a 217-foot large clam package ideal for frequent users and professionals.

How does the square, twisted profile improve cutting performance?

The four-cornered spiral design concentrates force along sharp edges, producing cleaner cuts with fewer passes compared with round line. The twisted shape also stabilizes the line in flight, reducing wobble and maintaining cutting efficiency at high RPMs.

• Four cutting edges for aggressive slicing action
• Twisted spiral reduces vibration and line flutter
• Designed for one-pass cutting to save time and fuel

Which jobs is this .105" line best suited for?

This line is formulated for medium to heavy grass, dense weeds, and light brush where a more aggressive edge is needed than standard round lines provide. It balances strength and flexibility so it won't shatter on tougher stems while still delivering fast, efficient trimming.

• Ideal for overgrown lots, field edges, and thick weed patches
• Performs well on heavy lawn grass and mixed vegetation
• Not intended for heavy woody brush or saplings

Will this line fit my trimmer and how much do I get?

As an OEM Echo part (330105071), this .105" diameter line is made to fit Echo trimmers that accept that size and many other brand spools sized for .105" line. The package includes 217 feet, giving plenty of length for multiple re-spools or professional use.

• OEM part number: 330105071 for compatibility reference
• 217 feet total length—suitable for frequent reloading
• Check your trimmer manual for supported line diameters

How durable is the Black Diamond line under regular use?

Black Diamond is formulated to resist premature breakage while maintaining a sharp edge for longer, reducing downtime and spool changes. Its construction balances abrasion resistance with enough flexibility to survive impacts commonly encountered during trimming.

• High wear resistance for extended runtime between reloads
• Twisted shape helps resist snap-offs from impact
• Performs consistently at typical trimmer RPM ranges

Who is this for: Landscapers, property managers, and homeowners who need a robust, efficient trimmer line for medium to heavy cutting will appreciate ECHO's Black Diamond .105" line. If you want OEM reliability, a long 217-foot supply, and a profile built to slice through tough vegetation with fewer passes, this line provides professional-grade performance without specialized setup. Verify your trimmer accepts .105" diameter line before purchasing to ensure a proper fit.