Specifications: This spare turf trimmer spool kit is specially designed for BLACK and used for double-decorator. With the help of the automatic feed system, replacing the spool can simplify the tedious work of manually winding the spool. The spool for BLACK decorative board using centrifugal force to feed the trimmer lines as needed. The high-quality weeder cord can easily cut through grass and weeds. More convenient to use and store: the automatic feed system replaces the spool and saves the time of manually winding the wire rope trimmer. Applicable to grass board: Compatible with for gh400, gh500, gh600, gh900, st6600, st7000, st7200, st7700, st7701, st8600, st9000, cst1000, cst1100, CST1200, CST2000, MTC220, MTE912, NST1018, NST1024, NST1118, NST1810, NST2018, NST2118, LST120, LST136, LST140, LST201, LST220, LST300, LST400, LST420, LST522, LST1018, LSTE523, LSTE525, BESTA510, BESTA512. Type: Trimmer Spool Material: Nylon Quantity: 3Pcs Compatible with: for BLACK + DECKER AF-100-3ZP Features: Replacement, Durable, Easy to Use Single Spool Size: 6.7cm x 2.8cm(Approx.) Line Length: 915cm(Approx.) Notes: Due to the light and screen setting difference, the color of item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x Trimmer Spool