SUITABLE FOR BLACK AND DECKER Fits most grass trimmer models such as GL280, GL301, GL425, GL430, GL4525, GL5028, GL530, GL545, GL555, GL560, GL570, GLC120, GLC13, GLC1823L, GLC. 1823l(20), GLC1825L, GLC1825N, GLC2000, GLC2500, GLC3000, GLC1423L, GLC3630L20, ST4525, ST5530, ST5530CM, STC1815, STC1820, STC1820. CM, STC11 820PST, ST1823, ST182320, STC1840, STC1840EPC, BESTE625, BESTE628, BESTE630, BESTA525, BESTA530, BCSTA536, BCSTE636L1 etc. PREMIUM TRIMMER LINE: the 30 ft trimmer line allows for a larger mowing area. The durable and flexible polyamide nylon thread has a diameter of 0.065 in. It is extremely durable for continuous work. FAST AND CLEAR CUT: The replacement spool for the automatic feed system facilitates the tedious work compared to manual winding spools. It uses centrifugal force and aerodynamics to reduce drag and achieve fast and clear cuts. PERFECT REPLACEMENT SPOOLS - They are the perfect replacement for most original Black & Decker coils such as A6481, A6485, AF-100, AF-100-3ZP, AF-100-BKP and AF-100-2. The spool can be inserted and removed without tools. The operation is simple, damage to the device is avoided and the thread is optimally used. VALUE PACK - The package includes 6 replacement trimmer spools, 1 spare spool cover and 1 spare spring. The spool cover is replacement for the RC-100P cap, the spring is replacement for the RC-100P spring. Excellent value for money., Manufacturer: Uchidodo