Upgrade and restore the performance of your worn-out power tools with our premium router brushes, perfect Compatible with Porter Cable power equipment. This carbon brush set precisely replaces OEM part numbers N031652, 869659, and 824216, perfectly compatible with mainstream Porter Cable router models including 6302, 6902, 690LR, 691, 6912, and 694917 for wide application. Crafted with high-purity, high-density carbon material, our motor brushes carbon features excellent wear resistance, low friction, and high temperature resistance. It effectively solves common tool problems such as motor sparking, smoking, insufficient power, and intermittent operation during long-time woodworking work. With standard OEM dimension of 0.75" x 0.43" x 0.24", no trimming or modification is needed, enabling quick and labor-saving installation. Each package contains 4 pieces of complete carbon brushes, ready for direct replacement. Replacing old and worn carbon brushes regularly can stabilize motor operation, restore electric braking function, and greatly extend the service life of your Cable power tools. Please check the armature for burns or cracks before installation to ensure safe and stable tool operation.