THTEN Replacement Trimmer Head Spool Kit 20PK — Fits Black+Decker GH Series, Tool-Free Install

The THTEN AF-100 replacement blade head spool is a 20-piece trimmer head and blade kit designed to fit many Black+Decker string trimmer models, delivering quick tool-free installation and ready-to-use cutting components.

This kit bundles spools, polycarbonate blades, set screws and a wrench so you can replace worn trimmer heads and blades fast. It’s built for common Black+Decker lines such as GH400, GH500, GH600, GH900 and several LST and NST models, letting you restore cutting performance without buying a new trimmer. The parts are engineered for straightforward assembly and everyday lawn and yard trimming tasks.

Will this THTEN AF-100 kit fit my Black+Decker trimmer model?

Compatibility is broad across many Black+Decker garden trimmers and heads. Confirm your model number against the included compatibility list before purchasing to ensure a correct fit.

• Compatible with GH400, GH500, GH600, GH610, GH900, GH912 models
• Also fits ST6600, ST7000, ST7700, CST1000, CST1200, CST2000
• Supports MTC220, MTE912, NST2018, NST1118, NST2118 and LST220/300/400/420/136 lines

How easy is it to install the replacement head and blades?

Installation is designed to be quick and mostly tool-free: push the spool into the trimmer socket until it locks, using the side push buttons when present. The package also includes a wrench and set screws for securing parts when needed.

• Push-in head locks automatically with side-button assistance
• Includes tool wrench and 4 set screws for secure mounting
• Clear steps reduce downtime so you can return to trimming quickly

What components come in the 20-piece THTEN AF-100 package?

The kit contains spools, polycarbonate blades, set screws and a tool to make replacement complete and functional out of the box. It supplies multiple parts so you have spares for future maintenance.

• 6 pack of polycarbonate replacement blades for repeat use
• 4 set screws to secure the head assembly during installation
• 4 pack trimmer spools and 1 pack trimmer head included
• 1 pack tool wrench provided for tightening and adjustments

Are there any cautions or best-use tips for this replacement head?

The AF-100 head is intended for trimming grass and light weeds rather than heavy-duty edging or contact with hard surfaces. Avoid using the blades along brick, wooden fences or chain to prevent damage and premature wear.

• Do not use the blade head for edging along hard surfaces or fencing
• Avoid striking chain, large rocks, or metal to protect the polycarbonate blades
• Inspect and tighten set screws periodically for safe operation

Who is this for: This THTEN AF-100 20PK replacement kit is aimed at homeowners and landscape maintenance users who need an affordable, ready-to-install replacement for worn trimmer heads on compatible Black+Decker models. It’s useful for those who want spare blades and spools on hand to minimize downtime, prefer straightforward, mostly tool-free updates, and perform routine yard trimming rather than heavy edging or professional hard-surface work. If you’re unsure about fit or encounter any problem, contact the seller for assistance before returning the product.