SF-080 Trimmer Replacement Spools Compatible with Black and Decker GH3000 LST540 LST540B GH3000R SF-080-BKP, 20ft 0.080" Auto Feed Spool Single Line (3 trimmer line,1 replacement cap) BY - USA-SUPPLY Spool model: SF-080 / SF-080-BKP. SF-080 Spool Compatible with most Black & Decker 7.5-Amp Electric string trimmer models:GH3000、GH3000R、LST540、LST540B