The Optimum Range Ductile Iron Coupling from JCM Industries (KEL300) is engineered for high-performance pipe connections. This coupling, featuring an epoxy coat finish, is designed for pipe sizes ranging from 3.45 to 4.20 inches. It includes stainless steel bolts for added strength and corrosion resistance. Ideal for water and wastewater systems, this coupling meets industry standards for reliability and safety. Its ductile iron construction provides excellent durability, making it suitable for demanding applications. This product is a dependable choice for professionals seeking quality in pipe fittings.