Eyoloty KST 120X Replacement Trimmer Head for Kobalt 40V | 14 Blades + 8 Pre-Cut Line

Eyoloty KST 120X Replacement Trimmer Head: a practical upgrade for your Kobalt 40V weed eater

Designed to fit select Kobalt 40V max trimmers, the Eyoloty KST 120X head blends reliability with faster, cleaner trimming. This kit supports both light maintenance and tougher landscape tasks, helping you keep edges crisp and lawns tidy without requiring constant tool adjustments.

Two versatile options for different jobs

Choose between two setups tailored to your yard: polycarbonate blades for smooth grass and weed control, or a thicker 8-pack of pre-wound line for stubborn growth and edging. The two options work with varying work scenarios, helping you stay productive across seasons.

• Option 1: Polycarbonate blades for precise, clean cuts on tender grass and light weeds.
• Option 2: 8-pack pre-cut line for tougher weeds and edging where blades alone struggle.

New upgrade: stronger 0.12-inch line for longer sessions

The line diameter is upgraded to 0.12 inches, increasing wear resistance compared with older spool lines. When paired with our KST 120X-06 blades, this setup can help you trim more material between line changes, saving time during longer sessions.

Easy Quickload installation for safer operation

The refreshed locking system keeps line and blades secured during high-speed rotation, while enabling quick, tool-friendly installation or replacement without complex steps.

What’s included

• Polycarbonate replacement head
• 14 replacement blades
• 8-pack pre-cut line
• 6 screws
• 1 wrench

Compatibility and support

This head is compatible with Kobalt 40V max models KST 120X, KST 120X-06, and KST 2040-06, plus KDLA 3040-03 replacement heads. If you’re unsure about fit, contact us and we’ll respond within 24 hours.

Why Eyoloty can help with your lawn care

Beyond fit, this kit emphasizes practical upgrades that can help you achieve quicker trims, consistent cuts, and less downtime. Consider it a flexible option for regular lawn upkeep or seasonal yard work, designed to support your workflow without promising guaranteed results.