Product description Replacement spool cap compatible with BLACK+DECKER AF-100 and BLACK+DECKER RC-100-P trimmers. [Design] Easy-to-replace spool cap design. Includes 4 or 6 replacement caps and 4 or 6 springs, ideal for daily use, replacement, and storage. [Function] Designed as a replacement lid for automatic AFS feed spools used in line trimmers. [Advantages] Made with advanced production technology for durability and long-lasting performance. Offers stable operation and high reliability. Ideal replacement for worn or damaged parts. Suitable for garden and agricultural use. [Easy] Simple installation process helps extend the life of your trimmer without the need for a full replacement. Perfect for use on terraces, lawns, courtyards, gardens, crops, and landscaping projects. [Practical] Engineered to withstand rugged edges and tough surfaces. Improved aerodynamics help reduce noise and line vibration. Package Includes: 4 x Replacement Spool Cap Cover + 4 x Spring 6 x Replacement Spool Cap Cover + 6 x Spring