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BLACK+DECKER string trimmer auto feed system replacement spool works with BLACK+DECKER auto feed string trimmers. The 30 Ft. factory-wound replacement spool features a 0.065-inch diameter line. Compatible with the following BLACK+DECKER string trimmers: GH400. GH500. GH600. ST6600. ST7000. CST1000. CST2000. NST2018.
