Blocks unused outlets on brake master cylinders M10x1 size ensures a secure fit Durable construction for long-lasting performance The brake master cylinder blanking plug, sized M10x1, is designed to effectively seal off unused outlets during installation. This component is essential for maintaining optimal performance and safety in your braking system. Crafted for durability and reliability, the blanking plug prevents leaks and ensures your system operates efficiently. Easy to install, it provides a secure fit, making it a must-have for any brake system setup. .