compatible with AF-100 Fits most BLACK+DECKER string trimmers: GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, CST1000, CST1200, CST2000, MTC220, MTE912, NST2018, NST1118, NST2118, LST220, LST300, LST400, LST420, LST136 30-foot/9m replacement line is factory wound for a superior feed, Includes 0.065-inch/1.65mm diameter line Replacement spool cap designed for use with trimmers. (Spring not required for cordless trimmers)