The JCM Industries Optimum Range Ductile Iron Coupling is designed for pipe sizes between 6.28 and 7.60 inches, featuring ECoat bolts for superior corrosion resistance. Constructed from high-strength ductile iron, this coupling ensures durability and reliability in various applications. It meets ANSI standards, making it suitable for water and wastewater management. The robust design allows for easy installation and secure connections, providing peace of mind for contractors and engineers. With 10 bolts included, this coupling is an excellent choice for those seeking a reliable and efficient solution.