Abrasion resistant: The AF100 trimmer spool is made of an improved nylon polyamide material that has a tensile strength of over 45 kg and is 30% more durable than other brands for a longer lifespan. Easy to install: The spool has the perfect size for the trimmer model, is ready to use and can be installed quickly without tools. Easy to use: The grass trimmer spool compatible with Black and Decker automatically feeds the trimmer using centrifugal force, which reduces the hassle of manually sorting out the replacement trimmer line spool while you work. Professional seller: As a professional brand, we have an excellent customer service team and product quality guarantee. The package includes 12-pack AF100 wire spool 1.65 mm 9 m /pc, 3 pieces of lid, 3 pieces of spring. Grass trimmer spool compatible with Black & Decker grass trimmer models: GL280, GL301, GL425, GL430, GL545, GL555, GLC13, GLC2500, GLC2500L, GLC3000, GL4525, GL4525SB, GL5028, GL5028SB,GLC1423L, GLC1825N, GLC1823L, GLC 1825L, GLC3630L, ST5530,ST4525, STC1820, STC1815, STC1820PC /EPC, STC1840 /EPC, ST1823.