GREENWORKS spool

1803802 spool: which trimmers it fits

GREENWORKS lists the 1803802 (also sold as .065" Dual Line Auto-Feed Spool (6-Pack) +Spool Cover) for 4 trimmer models. It takes .065" line.

Compatible trimmers

as listed by GREENWORKS
SeriesModels
STBASTBA40B210 (1366502), STBA40B210 (1301202)
Other2101602
STST40B410 (2103002)

Your model number is on the label on the trimmer's motor or shaft housing. If it isn't listed, compare the old spool and cap before buying.

Sources

Compiled from GREENWORKS's own product page and manual, last checked 2026-09-25. aporozona is not affiliated with GREENWORKS.