Finding reliable weed eater spools can cut maintenance time and extend string life. This guide highlights five compatible, auto-feed spools that fit popular Black+Decker and Worx models. Each option emphasizes durability, easy installation, and smooth feeding to minimize downtime during yard work.
| Product | Brand | Spool Type | Approx. Line Length | Compatibility Notes |
|---|---|---|---|---|
| Eventronic 10 Pack AF-100 | Eventronic | AF-100 Autofeed Spool | 240 ft total | AF-100 family; Black+Decker units |
| BLACK+DECKER 3-Pack AF1003ZP | BLACK+DECKER | AF100 Series Spool | 3 ft per spool (pre-wound) | Wide BLACK+DECKER compatibility |
| GreatBuddy 3 Pack AF-100 | GreatBuddy | AF-100 Spool | 30 ft per spool | Fits many Black+Decker models |
| YWTESCH 16 Pack AF-100 | YWTESCH | AF-100 Autofeed Spool | 360 ft total | AF-100 family; Black+Decker compatibility |
| KAKO AF100 Spool | KAKO | AF100 Spool | 30 ft per spool | AF100 and GH600/GH900 compatibility |
Eventronic 10 Pack AF-100 Spool For Black+Decker

Eventronic offers a robust AF-100 autofeed replacement spool compatible with a wide range of BLACK+DECKER weed eaters. This 10-pack provides substantial spool rotation to reduce downtime between replacements. Its automatic feed mechanism uses centrifugal action to advance line, minimizing manual winding during work. The line is engineered with higher abrasion resistance, aiming to extend service life under heavy use. Compatibility spans several AF-100 series machines, including ST and CST models, making it a versatile option for households with multiple BLACK+DECKER units.
BLACK+DECKER Weed Eater String, 3-Pack AF1003ZP

This official BLACK+DECKER 3-pack AF1003ZP spools the string in factory wound form for consistent feed and reliable performance. It is designed to be compatible with a broad array of BLACK+DECKER trimmers and string trimmers from the BESTA and CST series. The included spools simplify maintenance by reducing the need for manual winding and reloading, helping users complete trimming tasks more quickly. The pre-wound line ensures a uniform feed and predictable cutting behavior.
GreatBuddy 3 Pack AF-100 Spool For Black+Decker

The GreatBuddy set is a cost-effective trio of AF-100 spools, designed to fit numerous Black+Decker weed eaters. The spools arrive pre-fed with line, enabling quick swaps without winding. Users benefit from a balance of flexibility and strength, with a nylon-based line that resists wear during heavy trimming. The pack is marketed as a practical solution for households with multiple openings or for those who want multiple backups ready for use across different units.
KAKO AF100 Spool For Black Decker Weed Eater

KAKO’s AF100 spool is engineered for compatibility with Black+Decker weed eaters and several GH/LST models. Each spool is pre-wound with 30 feet of 0.065-inch nylon line, designed for smooth autofeed and reliable performance in routine trimming. The construction uses a sturdy ABS body and durable nylon thread, crafted to withstand longer service life. This option is suitable for users seeking dependable spools that minimize manual line winding and maintenance interruptions.
YWTESCH 16 Pack AF-100 For Black+Decker

The YWTESCH 16-pack focuses on autofocus compatibility for Black+Decker weed eaters. With 360 feet of total line, it accommodates frequent replacements without immediate repeats. The line is 0.065 inch in diameter, offering sturdy performance and reduced breakage during trimming. The product emphasizes automatic feeding, simplifying line changes while maintaining efficient cutting across varied grass densities.
20 Pack Eventronic WA0010 For Worx

The WA0010 set targets Worx weed eaters with AF-100 family compatibility. It includes 20 spools with several caps and spacers, enabling quick spool replacement. The line is 0.065 inches in diameter and designed for durability and efficient cutting at high speeds. Autofeed works to reduce manual winding, providing a convenient option for Worx model owners seeking extended use before refilling.
Buying Guide: Key Purchase Considerations
- Compatibility: Verify model compatibility before purchasing. AF-100 spools fit certain Black+Decker models; Worx compatibility typically includes a list of WG and WA models. Cross-check your trimmer’s model number to avoid mismatches.
- Line Diameter and Length: A 0.065-inch line is common for mid-range trimming tasks. Longer pre-wound lengths reduce how often you reload but may increase feeding resistance on lighter trimmers.
- Autofeed Reliability: Autofeed spools simplify line management by advancing string via centrifugal force. Look for spools with proven feeding performance and fewer jams during heavy trimming.
- Material Toughness: Nylon or polyamide line with abrasion resistance extends service life, especially when working near fences, rocks, or hard surfaces. Durable bodies help withstand repeated impacts.
- Pack Size and Value: Multi-pack spools offer cost efficiency and backups. Assess your yard size and replacement cadence to determine how many spools you’ll need.
- Installation Simplicity: Winding and loading should be straightforward or pre-wound. Spools marketed as “ready to use” can save time during replacements.
- Brand Confidence: Authorized or compatible brands often ensure consistent fit and feeding performance. Some manufacturers publish compatibility with a broad range of models for convenience.
- Storage and Longevity: Keep spools in a cool, dry place. Protect line from UV exposure to avoid premature degradation and cracking over time.