Kudoosen Replacement Spools for Greenworks 24V & 40V Trimmers — 6-Pack .065" Auto-Feed, 16 ft Pre-Wound

These are six pre-wound .065" auto-feed replacement spools plus one cap made by Kudoosen to quickly fit Greenworks 24V 12" and 40V 13" single-line string trimmers.

Replace worn or broken trimmer line fast with a bundle designed to match Greenworks single-line auto-feed spools (models like 21342, ST24B215, ST40L213 and others). Each spool arrives pre-loaded with 16 ft of 0.065" polyamide nylon line and is sized to the 1803702/29252 spool housing, while the included cap corresponds to part 3411546A-6. The set is built for straightforward installation, durable cutting performance, and handy on-the-hedge spares so you won’t be sidelined by a snapped line.

How do these spools fit my Greenworks trimmer?

The Kudoosen replacement spools are engineered to be compatible with a wide range of Greenworks single-line models for both 24V 12" and 40V 13" trimmers and edgers. They match the common spool dimensions and locking pattern so installation is a simple swap of the old spool and cap.

• Compatible with Greenworks models including 21342, ST24B215, ST40B05 and more.
• Fits the 1803702 / 29252 spool size and uses the cap style 3411546A-6.
• Direct replacement for .065" single-line auto-feed systems.

How easy is it to install and reload the spool?

Installation requires no special tools: remove the worn spool, place the pre-wound Kudoosen spool into the head, snap on the cap, and you’re ready. Because each spool arrives pre-wound with 16 ft of line, there’s no manual winding or complex threading.

• Pre-wound 16 ft .065" line saves reload time and frustration.
• Simple remove-and-replace process — no winding required.
• Durable ABS spool body resists cracking and wear.

What cutting performance and durability can I expect?

The spools use high-quality polyamide nylon line intended to balance flexibility and abrasion resistance for typical lawn and light brush trimming. They’re not a specialty heavy-duty line but are well suited for regular yard maintenance and edging tasks.

• .065" line thickness for standard trimming and edging jobs.
• Polyamide construction offers consistent cutting and fewer breakages.
• ABS spool housing helps withstand impact and weather exposure.

What’s included and how many spares will I get?

This Kudoosen pack contains six pre-wound replacement spools plus one replacement cap, giving you multiple on-hand spares for routine yard work. The set reduces downtime and lets you finish jobs without waiting to buy single spools.

• 6 pre-wound .065" spools, 16 ft each, ready to install.
• 1 replacement spool cap compatible with the listed Greenworks heads.
• Pack designed for households with several small yards or frequent trimming needs.

Who is this for: Homeowners and maintenance pros who use Greenworks 24V or 40V single-line trimmers and want an affordable, ready-to-install supply of replacement spools. This set fits best for regular yard upkeep, edging, and light brush control where a standard .065" auto-feed line offers a good balance of cut quality and longevity. If you need heavy-duty or specialty line for thick brush, consider a larger gauge or different line type, but for everyday trimming this Kudoosen pack keeps your trimmer loaded and ready.