Line String Trimmer Replacement Spool 30ft 0.065" for Black+Decker String Trimmers Replacement Auto Feed Spool Compatible with Black Decker AF-100(8 Pack(6 Spools+1 Cap+1 Spring) You will get: 6 pack of trimmer spool lines and 1 trimmer cap, and 1 Spring, 8 pieces in total Size:The trimmer cap is 3.35 inch/ 8.5 cm in diameter, 1.38 inch/ 3.5 cm in height Grass rope: 9.144M*1.65mm Coil diameter: 6428mm 45g/piece The spool line is 30 ft/9.144 meters in length Compatible with Black and Decker AF-100 Suitable for multiple string trimmer models: GH400, GH500, GH600, GH900, GH912, ST6600, ST7000,ST77O0, CST1000CST1200CST2000, MTC220, MTE912, NST2018,NST1118, NST2118LST220, LST300, LST400, LST420, LST136 Material: ABS spool and durable polyamide nylon thread, flexible and long service life; These kind of material can reduce drag and achieve fast cutting Easy to operate: auto feed system replacement spool help to ease the tedious work of hand-winding spools.