30 Pack Universal Walk Behind String Trimmer Mower 21.25" Line x .155-Inch Line Compatible with Senix, Earth-Quake, BILT, Toro 58620 Walk Behind String Mower Easy Assembly

What It Is

This is a 30-pack of universal .155-inch diameter trimmer line, cut to 21.25-inch lengths, designed for walk-behind string mowers. It’s intended for trimming grass and weeds in medium to heavy residential use, compatible with brands like Senix, Earth-Quake, BILT, and Toro 58620.

Fitment & Compatibility

Before buying, confirm your mower uses .155-inch line (common for walk-behind models but not all). Measure your existing line’s diameter with calipers—.155 is thicker than standard .095 or .130 line. Check that your mower’s cutting head accepts pre-cut lengths (some require spools or bulk line). This pack is for universal fit, but verify your model’s deck size (typically 21–22 inches) and that the line length (21.25”) matches your head’s loading method. Not OEM for Toro 58620, but aftermarket compatible—check your manual for line specs first.

Key Things to Know

• Quality: .155-inch line is heavy-duty, good for tough weeds, but may wear faster on abrasive surfaces than premium co-polymer lines.
• Installation: Easy assembly—just cut the zip tie, insert lengths into the head. No winding required. Takes 5–10 minutes.
• Gotchas: Pre-cut lengths mean you can’t adjust line size mid-use. If your mower uses a bump-feed head, these won’t work unless it accepts individual strands. Also, 30 pieces may seem like a lot, but you’ll use 2–4 per reload.
• Durability: Some users report the line snaps more than OEM in dense brush—keep a few spares handy.

Should You Buy It

This is a solid value for owners of walk-behind string mowers who want a quick, no-fuss reload without measuring or winding. It’s best for casual users with standard .155-inch heads and light-to-medium trimming. If you need professional-grade durability or have a bump-feed head, consider a different line type.