Compatible Models: Trimmer Spool for GH400, GH500, GH600, GH610, GH900, GH912, GL280, GL301, GL425, STC1820, STC1815, ST4525, ST5530, STC1840, ST1823, ST6600, ST7000, ST72 00, ST7700, ST7701, ST8600 , ST9000, CST1000, CST1100, CST1200, CST2000, MTC220, MTE912, NST1018, NST10, NST1118, NST1810, NST2018, NST2118, LST120, LST136, LST140, L ST201, LST2 20, LST3 00, LST400, LST420, LST522, LST1018, LSTE523 , LSTE525, BESTA510, BESTA512, BESTE620. Dimensions: The trimmer cord spool is 30 feet long and 0.65 inches in diameter; the trimmer cap is 3.35 inches in diameter and 1.38 inches in height; the spool cap can replace Black and Decker RC. The 100-P cap spring can be replaced with the Black and Decker RC-100-P spring. Specifications: For trimmer spools replaces Black & Decker AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2. Durable: Self-feeding replacement spool made of premium ABS and durable polyamide nylon cord, flexible and durable, these trimmer spool parts will last longer. Package