KAKO Sawtooth .140 Trimmer Line 388 ft — Dual‑Core Serrated, Heavy‑Duty Cutting for Thick Weeds

KAKO Sawtooth 140 is a commercial-grade, heavy-duty .140" trimmer line designed with a serrated sawtooth profile and dual-core construction to cut thick grass and dense weeds faster and resist breakage.

Whether you maintain a large lawn, manage commercial grounds, or own a powerful walk-behind trimmer, the KAKO Sawtooth 140 delivers longer-lasting edge retention and increased cutting efficiency compared with standard round lines. Made from reinforced nylon and engineered for high-impact performance, this .140-inch diameter line comes on a 388-foot spool and weighs about 3 lb — enough to reload multiple heads or keep a crew supplied for routine trimming chores.

How does the sawtooth shape improve cutting performance?

The serrated profile creates multiple cutting edges that slice through thick stems and stalks instead of simply bluntly tearing them. That design reduces engine load and keeps the line sharper longer, so you spend less time replacing string and more time mowing.

• Multiple teeth create slicing action for faster cuts
• Sawtooth edges maintain sharpness longer than round lines
• Less engine drag and reduced vibration during use

Will this line fit my heavy-duty walk-behind or handheld trimmer?

The KAKO Sawtooth 140 is sized at .140" diameter, which is compatible with most heavy-duty reeds and wheeled trimmer mowers as well as many commercial handheld spools. Confirm your trimmer manual for allowable diameters; the line works with popular brands such as Echo, Husqvarna, Ryobi, Cub Cadet, Black & Decker, and more.

• .140" diameter fits many commercial trimmers and heads
• Use in wheeled walk-behind models and heavy handheld units
• Check manufacturer specs before loading to ensure compatibility

How durable is the dual-core nylon construction?

The dual-core design pairs an inner reinforcement with an outer serrated shell to boost tensile strength and impact resistance. This makes the string less prone to snap when striking mulch, pavement edges, or dense brush, extending runtime between replacements.

• Reinforced nylon minimizes breakage under heavy loads
• Dual-core structure resists fracturing from impacts
• Consistent diameter and weight help maintain trimmer balance

How much line comes on the spool and what jobs is it best for?

The spool contains 388 feet of trimmer line, giving ample length for multiple reloads or long maintenance sessions without stopping to resupply. It’s ideal for commercial landscaping, large residential properties, and any task involving dense grass, thick weeds, or hard-to-reach edges.

• 388 ft per spool — suitable for repeated reloads
• 3 lb total weight for easy handling and storage
• Best for thick grass, heavy weeds, edging, and commercial use

Who is this for? Landscapers, maintenance crews, and homeowners with powerful trimmers who need a robust string that cuts efficiently and lasts longer will appreciate the KAKO Sawtooth 140. If you run a walk-behind mower or a heavy-duty handheld head and want a heavy-gauge option that reduces downtime and line wear, this dual-core serrated .140" line is built for that workload. For any compatibility questions or service needs, KAKO offers a 30-day support window with responsive customer care.