The JCM Industries Optimum Range Ductile Iron Coupling is engineered for pipe sizes between 8.40 and 9.75 inches, featuring ECoat bolts for enhanced corrosion resistance. This coupling is made from high-strength ductile iron, ensuring durability and reliability in demanding environments. It is designed to meet ANSI standards, making it suitable for various applications in water and wastewater management. The coupling's robust construction allows for easy installation and secure connections, providing peace of mind for contractors and engineers. With a total of 10 bolts included, this coupling is an excellent choice for those seeking a reliable and efficient solution.