Use the GH-100 Bronze Economy 360 Degree Conduit Hub alongside NSI ground clamps to ground copper grounding conductor to water pipes in indoor environments. This 1" adapter hub swings 360 degrees to make alignment simple and offer greater flexibility in installation. The threaded bronze hub is cast of high-strength, highly conductive bronze and made of economical, high-quality metals that provide durable performance in a range of applications. Conduit hub fits ground wire in the range of 10 SOL to 3/0 STR. Stock products you can rely on—stock NSI.