The Fernco Hulk 5 Coupling is designed to take on the unexpected in underground pipe connections. Built with heavy-duty, non-shear construction and reinforced with stainless steel rods, the Hulk5 resists shifting and shear caused by ground movement, while its high-torque stainless clamps ensure a strong, leak-free seal. It's compatible with a wide variety of pipe types, from SDR-35 and Schedule 40 to ductile iron, clay, steel, and concrete eliminating the need to carry an array of different couplings. With a dimensional range of 5.30 in. to 6.70 in. pipe OD, the Hulk5 bridges the gap between traditional sizes, offering a flexible solution when pipe dimensions don't line up as planned. Rated for a maximum test pressure of 4.3 PSI for DWV applications, it's built to keep your crew working and your schedule intact. The Hulk Coupling represents innovation and durability you can depend on. Use Hulk 5 coupling for connecting 4 in. Clay to 6 in. Plastic.