Use The GHM-50 360 Degree Swing Type Conduit Hub Alongside Nsi Ground Clamps With Serrated Hubs to Ground Copper Grounding Conductor to Water Pipes In Indoor Environments. This 1/2" Adapter Hub Swings 360 Degrees to Make Alignment Simple and Offer Greater Flexibility In Installation. The Zinc-Plated Steel Screws and Bronze Hub Are Made Of Economical, High-Quality Metals That Provide Durable Performance In A Range Of Applications. Conduit Hub Allows For Entry From Any Direction and Fits 1/2" Conduit or Wire