Connect pipes together in a high-risk DWV pipe system using the Clamp-All® Hubless Coupling. This Hi-Torq 125 coupling attaches to two 4 in. cast iron pipe and fittings. Use the Clamp-All® Hi-Torq 125 Wrench (SKU 99125 – sold separately) and tighten worm drive clamp screws to a full 125 lbs. of torque to secure in place. Hubless coupling has a slotted shield design with unique flexible rigidity™ to withstand high thrusts or blockage pressure on mismatched pipe/fitting diameters. Durable coupling is made of 24 gauge 304 18-8 chromium nickel stainless steel and is corrosion resistant. Gasket is made of neoprene. Worm drive screws are made of 305 stainless steel. Use fittings and other valves to set up a new irrigation system, expand an existing system, or make repairs.