General description Perfectly compatible with BLACK & DECKER RC-100-P, AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2 trimmers. This set includes 4 spool caps and 4 springs, designed to meet your daily replacement needs. The components are specially designed to protect the line and keep the spool in place, ensuring your machine operates effectively. Ideal for use in patios, lawns, yards, gardens, crops, and landscaping. Technical specifications Material: metal, plastic Compatibility and accessories Compatible with BLACK & DECKER models: RC-100-P, AF-100, AF-100-3ZP, AF-100-BKP, AF-100-2 Fits most trimmer models: GL280, GL301, GL425, GL430, GL545, GL555, GLC13, GLC2500, GLC2500L, GLC3000, GL4525, GL.4525S.B, GL5028, GL5028SB, GLC1423L, GLC1825L, GLC3625L, STC1820, STC1815, ST4525, ST5530, STC1820PC, EPC, STC1840, EPC, ST1823 Usage Replacement parts for string trimmers Designed to maintain spool functionality