- Upgrade your RS550, RS555, RS540, and RS545 DC electronic starters with this set of 10 high-quality carbon brushes, designed for reliable and efficient performance. - Specifically engineered for compatibility with RS550 series motors, these carbon brushes ensure seamless operation and optimal electrical contact, preventing issues that can hinder your motor's performance. - Each brush plays a critical role in maintaining the smooth operation of your electronic starters, reducing wear and extending lifespan to help you avoid costly repairs or replacements. - With 10 pieces included, you have an ample supply for both regular maintenance and unexpected replacements, keeping your equipment running smoothly at all times. - These brushes are perfect for various applications ranging from model airplanes to power tools, ensuring that your devices function efficiently and consistently. - Crafted from durable materials for robust performance, these brushes are designed to withstand the demands of continuous use, making them an essential component for any RS series motor enthusiast or professional. - Invest in the reliability and efficiency of your electric starters with this essential replacement part, ensuring your equipment stays operational and performs at its best in any scenario.