CompatibilityGL280, GL301, GLC13, GLC2500, GLC3000, GLC3630L, GLC425, GL430, GL530, GL540, GL544, GL545, GL555, GL560, GL570, GL580, GL4525, GL5028, GLC1423L, GLC1825L, GLC1825 NAuto-feed system replacement spoolThe mower replacement spool is compatible with Black + Decker mowers, and can use centrifugal force to deliver the trimming line as needed, effectively reducing the tedious work of manually winding the spool.Efficient: Less resistance, more efficient cutting. The automatic feeding system replacement spool can alleviate the tedious work of manually winding the spool and save your time.High quality: High quality ABS and nylon fabric. The trimmer line spool is made of high-quality ABS and nylon resin fabric. This gives the mower line better flexibility and durability.Easy InstallationNo need for any extra tools, just remove the old spool and replace it with a new one to complete the installation, keeping your lawn trimmer in good performance.