Grass trimmer spool compatible with Black & Decker grass trimmer models: GL280, GL301, GL425, GL430, GL545, GL555, GLC13, GLC2500, GLC2500L, GLC3000, GL4525, GL4525SB, GL5028, GL555. 028SB,GLC1423L, GLC1825N, GLC1823L, GLC1825L, GLC3630L, ST5530, ST4525, STC1820, STC1815, STC1820PC/EPC, STC1840/EPC, ST1823 Abrasion Resistant The AF100 trimmer spool is made of an upgraded nylon polyamide material that has a tensile strength of over 45kg and is 30% more durable than other brands for longer life. Easy to Install The spool is the perfect size for the trimmer model, ready to use and can be installed in time without tools. Easy to Use The weed eater spool compatible with Black and Decker automatically feeds the trimmer by centrifugal force, thus reducing the hassle of manually sorting out the replacement trimmer line spool while working. PROFESSIONAL SELLER As a professional brand, we have excellent after-sales service team and product quality guarantee. Package contains 12 packs of AF100 thread spool 1.65 mm 9 m/pieces, 3 pieces cap, 3 pieces spring.