High quality: Made of high quality ABS spool and durable, flexible and long life nylon yarn. It is not easy to break, which ensures continuous work. Easy to use: The automatic feed system replacement spool eases the tedious work of manual winding spools. It uses centrifugal force and aerodynamics to reduce drag and make fast, clean cuts. Size: The spool line is 9.1m in length and 1.65mm in diameter; compatible with Black and Decker AF-100. Coil cap replaces RC-100-P cap, spring replaces RC-100-P spring. Perfect replacement coil: They perfectly replace most original Black & Decker coil models such as A6481, A6485, AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2. The coil can be inserted and removed without tools, and the operation is simple. Suitable for Black Decker: Fits most trimmer models: GL280, GL301, GL425, GL430, GL545 GL5500, GLC2500L, GLC3000, GL4525, GL.4525S.B, GL5028, GL5028SB, GLC1423L, GLC1825L, GLC3625L, STC1820, ST5530, ST4525, ST5530, STC1820PC, EPC, EPC, STC1840, EPC, ST1823 etc.