String Trimmer Line 25-Pack Walk-Behind Wheeled Pre-Cut String Trimmer Line 0.155" 18.5'' Length Compatible with Cub Cadet Craftsman MTD Troy-Bilt ST-100 Replaces#: 490-040-C035 743-0112

What It Is

This is a 25-pack of pre-cut, wheeled string trimmer line segments (0.155" thick, 18.5" long) designed for walk-behind string trimmers—not handheld trimmers. It replaces OEM part numbers 490-040-C035 and 743-0112, and is compatible with Cub Cadet, Craftsman, MTD, and Troy-Bilt ST-100 models.

Fitment & Compatibility

Before buying, check your machine’s deck size and head type. This line fits most walk-behind trimmers with a 0.155" line channel (common on 20"-22" deck models). It is not for handheld or straight-shaft trimmers. Verify your model against the ST-100 series or any trimmer using the OEM numbers above. Measure your current line diameter—0.155" is thicker than standard (0.130"), so it may not fit older or compact heads. Also confirm the head accepts pre-cut 18.5" lengths; some require longer or continuous spool line.

Key Things to Know

• Quality variance: At 3.8 stars, some users report inconsistent stiffness or premature breakage on heavy weeds. It’s adequate for light grass but may not last as long as OEM line.
• Installation: Pre-cut segments are easy to load—just push each piece into the head slots. No winding or spooling needed. Takes 5-10 minutes for a full replacement.
• Common gotcha: The 0.155" diameter can be too thick for some heads, causing jamming or poor feed. Test one piece first. Also, the 18.5" length is fixed—if your head requires longer segments, you’ll need to cut them yourself.
• Pack size: 25 pieces cover most single-head replacements, but if your trimmer has multiple heads, you may need two packs.

Should You Buy It

Buy this if you have a compatible walk-behind trimmer and want a quick, no-fuss line swap for light-duty trimming—especially if you’re replacing OEM parts and don’t mind slightly lower durability. Avoid it if you need heavy-duty cutting on thick weeds or have a handheld trimmer.