General description Premium Material: Made of good quality material, this carbon brush holder set ensures long-term service life, high strength, and durability, making it an ideal replacement for your old or worn parts. Worn brushes are often the cause of a poorly running motor, and replacing them can fix an intermittent motor. Technical specifications Includes: 12 pieces of RS550 DC motor carbon brush holders with copper brushes Compatible with: RS550 motors Installation Designed for compact size and lightweight, allowing for quick and easy installation. Usage Widely applicable to drivers, electric drills, electric screwdrivers, and many other tools.