1-1/2 Ground Joint CouplingThe 1 1 2 Ground Joint Coupling is a high pressure and secure connection fitting used in steam, air, water, and fluid transfer applications. It is made up of of multiple components designed to create a durable, leak free, and safe hose connection. Specification Value TYPE Ground Joint Coupling DESIGN Locking System, for interlocking clamp and spud design to ensure a secure and tight seal WEIGHT (lbs) 4. 079 CONNECTION SIZE 1 1 1 2" CONNECTION SIZE 2 1