●Fits multiple line trimmer models: GL280, GL301, GL425, GL430, GL545, GL555, GLC13, GLC2500, GLC2500L, GLC3000, GL4525, GL4525SB, GL5028, GL5028SB, GLC. 1423L, GLC1825N, GLC1823L, GLC1825L, GLC3630L, ST5530, ST4525, STC1820, STC1815, STC1820PC/EPC, STC1840/EPC, ST1823 ●Premium 10 m/1.65 mm replacement cord: the 10 m replacement cord is factory wound and ensures an excellent feed. ●The Auto Feed System replacement spool eliminates the time spent winding the trimmer by hand. ●6pcs 1.65mm Replacement Spool (AF-100), 1 Spare Coil Cap Cover (RC-100-P), 1 Spare Spring ●Hassle-free warranty - 3 year warranty. Replacement or refund will be provided for your preference. Any doubts and questions, please feel free to contact us.