✔COMPATIBLE MODELS: Black+Decker string trimmer: GH400, GH500, GH600, GH610, GH900, GH912, BESTA510, BESTA512, BESTE620, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522, LST1018, LSTE523, LSTE525, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, NST1018, NST1024, NST1118, NST1810, NST2018, NST2118, CST1000, CST1100, CST1200, CST2000, MTC220, MTE912 . ✔REPLACEMENT SPOOLS MODELS: AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2. ✔HIGH QUALITY: Premium weed eater string with 30ft/ .065'' trimmer line diameter easily cuts through grass and weeds. ✔AUTO FEED SYSTEM: Auto-feed system replacement spool eases the tedious work of hand-winding spools. ✔PACKAGE INCLUDED: 6 replacement spools, 1 cap, 1spring. Generep offers a generic replacement spool for Weed Eater trimmers, compatible with Black and Decker models like GH400, GH500, GH600, and more. This spool features a robust 30ft/0.065 inch trimmer line, efficiently cutting through grass and weeds. It's also compatible with Black and Decker's original AF-100 series trimmers, includes an auto feed system, and comes with a 1-year warranty.