THTEN Spool Replacement for Greenworks 24V/40V – 16 ft 0.065 in Auto-Feed, Includes 3411546A-6 Cap Covers

Overview

Upgrade your Greenworks trimming experience with the THTEN spool replacement. This replacement set is designed to fit a broad range of Greenworks 24V and G-MAX 40V single-line trimmers, delivering consistent line feeding and reliable performance when you need it most. The spool is crafted to support easy reloading, so you can spend less time fiddling with parts and more time keeping your lawn tidy.

Compatibility and versatility

Designed to work with multiple Greenworks models, this replacement spool covers both 24V and 40V family machines. On the 24V side, it fits a variety of models listed in product notes, helping you keep a single spare that travels well between compatible trimmers. For 40V users, it supports popular models within the STF/2130x and STF309 families, making it a practical choice for households with mixed tool setups.

• Greenworks 24V compatibility includes models like 21342 and related line trimmers.
• Greenworks 40V compatibility includes 21302, 21332, and STF309 family tools.

Product details and fit

• Each spool delivers approximately 16 ft of 0.065 inch diameter line for even trimming and steady feed.
• Includes cap components designed to support auto-feed operation and quick reloads.
• Cap covers are part of the package, helping shield the line as you work and simplify maintenance.

Real-world use cases

Whether you’re edging along sidewalks, trimming around garden beds, or tidying up under fence lines, this spool replacement offers dependable line length and feed behavior. The 0.065" line balances cutting power with control, while the auto-feed-cap system reduces downtime between reloads, so you can focus on the task rather than tool tweaks.

Quality and support

THTEN backs each replacement with a commitment to service. If you encounter any quality concerns, reach out and our team will respond within 24 hours with a recommended solution or replacement options. This is a practical, no-pressure way to keep your yard work moving forward.

What’s inside

Beyond the spool itself, you’ll find compatible cap components designed for reliable auto-feed operation and straightforward maintenance. Check your trimmer model against the compatibility notes to ensure the best fit for your Greenworks system.