The Nsi G-40 4/0 Armored Wire Adapter For Ground Clamps Offers A Convenient Solution When Grounding Armored Cable Alongside Interchangeable Nsi Ground Clamps. The Steel Screws and Bronze Adapter Body Are Made Of Economical, High-Quality Metals That Provide Durable Performance In A Range Of Applications. Adapter Swing 360 Degrees to Make Alignment Simple and Install From Any Direction. Use This Adapter With Nsi Ground Clamps to Easily Ground 4/0 Armored Cable to Water Pipes In Indoor Applications. Stock Pro