Suitable for Black & Decker: Fits most trimmer models: GL280, GL301, GL425, GL430, GL545, GL555, GLC13, GLC2500, GLC2500L, GLC3000, GL4525, GL.4525S.B, GL5028, GL5028SB, GLC1423L, GLC1825L, GLC3625L, STC1820, STC1815, ST4525, ST5530, STC1820PC, EPC, STC1840, EPC, ST1823 etc.High-quality trimmer line: The 9.15 m trimmer line, with a diameter of 1.65 mm, allows for a wider cutting range. The nylon polyamide line is durable and flexible, resisting breakage and ensuring continuous operation.Fast and clean cuts: The automatic feed system's replacement spool makes the tedious work of manually wound spools easier. It uses centrifugal force and aerodynamics to reduce drag and achieve fast, clean cuts.Perfect replacement coil: These coils are a perfect replacement for most original Black & Decker coil models such as A6481, A6485, AF-100, AF-100-3ZP, AF-100-BKP, and AF-100-2. The coil can be inserted and removed without tools, making the operation simple. This also prevents damage to the device and ensures optimal use of the threads.Great value set: The package includes 6 replacement trimmer spools, 1 replacement cap, and 1 replacement spring. The spool cap replaces the RC-100-P cap, and the spring replaces the RC-100-P spring. Excellent value for money.