Compatible Models: Trimmer line spool fits trimmer models GH400, GH500, GH600, GH610, GH900, GH912, GL280, GL301, GL425, STC1820, STC1815, ST4525, ST5530, STC1840, ST1823, ST6600, ST7000, ST7200, ST7700, ST7701, ST8600, ST9000, CST1000, CST1100, CST1200, CST2000, MTC220, MTE912, NST1018, NST10 NST1118, NST1810, NST2018, NST2118, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522, LST1018, LSTE523, LSTE525, BESTA510, BESTA512, BESTE620. Size: Length of the trimmer spool line is 30 feet / 9.1 m, and 0.065 inch / 1.65 mm in diameter; The trimmer cap is 3.35 inch / 8.5 cm in diameter, 1.38 inch / 3.5 cm in height; The spool cap can replace the cap of Black and Decker RC-100-P, the spring can replace the spring of Black and Decker RC-100-P. Specifications: TURMIN trimmer spools replaces Black & Decker AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2. Durable: High quality ABS auto feed replacement spool and durable polyamide nylon line, flexible and durable, this kind of lawn