<ul> <li>Perfectly compatible with BLACK+DECKER RC-100-P trimmers.</li> <li>4-piece trimmer caps and 4-piece springs meet your daily needs for replacement and in reserve.</li> <li>Specially designed to protect the line and hold the spool in place, let your machine work again.</li> <li>Made of high quality metal and plastic, good stability, resistance to shock, cold and oil.</li> <li>Ideal for patios, lawns, yards, gardens, crops, landscaping, landscape workers, etc. . Specifications: Material: Metal, Plastic</li> </ul> Spool Caps + 4PCS Springs Parts Shipping Quantity: 8 pieces (4 cup lids and 4 springs) Product color: orange Product size: 8.5cm in diameter Note: Manual measurement, please allow 1-3cm error.