Seals the brake fluid feed pipe to the master cylinder Inner diameter of 7mm, outer diameter of 17mm Sold individually for precise fit This high-quality brake fluid feed pipe sealing plug from FORST is designed to seal the connection between the brake fluid feed pipe and the master cylinder. With an inner diameter of 7mm and outer diameter of 17mm, it provides a secure, leak-free seal for the brake system. Sold individually, this sealing plug is essential for maintaining the integrity of your vehicle's braking system. It ensures proper fluid containment and helps prevent leaks, contributing to the safety and reliability of your brakes. .