This rebuild kit is designed specifically for the current generation of tandem master cylinders with a 1-1/16 inch bore size, ensuring reliable performance in heavy-duty automotive and industrial applications. It includes pistons with seals, a spring assembly, and a snap ring, providing all necessary components to restore your master cylinder to optimal condition. Whether maintaining a fleet vehicle or restoring equipment, this kit offers a cost-effective and efficient solution to prevent brake failure and ensure consistent braking performance. The components are engineered to withstand high-pressure environments, making it suitable for demanding industrial machinery, large trucks, and performance vehicles requiring durable brake system repair parts.