What this kit does for you Restores reliable motor contact and performance for tools using RS550-style motors. Minimizes downtime by providing spare parts on hand, so you can replace worn brushes quickly. Helps reduce sparking and uneven motor operation, extending the life of the motor and the tool. Package contents 2 RS550 carbon brush holders 8 additional carbon brushes for straightforward, multiple replacements Key features Function: Holds carbon brushes in place and maintains consistent electrical contact with the motor commutator to keep performance steady. Compatibility: Designed to fit models including 629817-8, 6270D, 6227D and cordless drills GSR4-2, GSR10.8-2-LI, GSR12-2-LI. Materials: Built from durable materials for long service life and reliable performance under normal tool use. Easy maintenance: Supplied spare brushes make replacement fast and simple, helping restore power and reduce vibration or noise from worn brushes. Practical applications / use scenarios On-site repair: Keep a kit in your service van to quickly replace worn brushes in a GSR10.8-2-LI or GSR12-2-LI drill and get a customer’s tool back to full performance the same day. Workshop maintenance: Use the holders and spares for routine preventive maintenance on older 6270D or 6227D tools to avoid unexpected failures. Refurbishment and DIY: Ideal for refurbishing used tools with RS550 motors—swap in new brushes and holders to improve motor smoothness and extend usable life. Installation and care Simple replacement procedure: remove the worn brushes, fit the new brushes into the supplied holders, and reassemble—no need for specialized parts beyond the kit. Check brushes periodically for wear and replace before excessive sparking or power loss occurs to preserve motor health. This kit provides the core replacement parts you need to maintain RS550-motor tools listed above, offering reliable materials, clear compatibility, and spare brushes so you can fix or maintain tools quickly and confidently.