THTEN AF-100 Trimmer Blades Head Replacement Spool 30Ft 0.065" Compatible with Black & Decker GH600,GH610,GH900,GH912,ST6600,ST7000,ST7700,NST1118,NST2118,LST220,LST300 Line String Trimmer 20 Pack

What It Is

The THTEN AF-100 is a 20-pack replacement spool and pre-wound trimmer line set for string trimmers, designed specifically for Black & Decker models using a bump-feed or fixed-line head. Each spool holds 30 feet of 0.065-inch diameter line, making it ideal for light to medium trimming tasks around lawns, edges, and flower beds.

Fitment & Compatibility

• Compatible models: Black & Decker GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, NST1118, NST2118, LST220, LST300. Also fits many other B&D trimmers with the AF-100 spool design.
• Check before buying: Measure your existing spool diameter and line thickness. The AF-100 uses 0.065" line – do not use thicker line (e.g., 0.080") as it may jam or overload the motor. Verify your trimmer head accepts pre-wound spools (not manual winding).
• OEM vs aftermarket: This is an aftermarket replacement, not a Black & Decker OEM part. Fitment is generally good, but some users report slight differences in spool hub height that can affect bump-feed reliability.

Key Things to Know

• Quality: Line is thinner than OEM (0.065" vs typical 0.080" on some models). It works for light grass but may break faster on weeds or thick growth.
• Installation: Simple – remove old spool, snap in new one, thread line through eyelet. No winding required. Takes 2-3 minutes per spool.
• Common gotchas: Bump-feed may require frequent tapping to advance line. Some spools may not lock into the head as snugly as OEM, causing rattling or line release issues.
• Value: 20 spools for $25.99 is cheap per spool, but you get what you pay for – expect shorter lifespan per spool compared to OEM or thicker line options.

Should You Buy It

Buy this if you have a compatible B&D trimmer, do light trimming only, and want a bulk supply for minimal cost. Avoid if you need heavy-duty cutting, prefer thicker line, or rely on consistent bump-feed performance – OEM spools or a universal head with 0.080" line will serve better.