The NSI G-83 Ground Clamp for Rigid Conduit with Flexible Wire Strap, grips on pipes between 1/2" to 1" in diameter and features a 1" adapter hub connected to the clamp by a flexible copper strap. The wire strap and adapter both swing 360 degrees, making alignment simple. The copper strap provides additional flexibility during grounding and helps to protect the conduit system from results of vibrations in the water system. The zinc-plated steel screws and bronze clamp body are made of economical, high-quality metals that provide durable performance in a range of applications. Use this clamp to attach ground wires from rigid conduit to water pipes in indoor environments. UL Listed 467 for Grounding and Bonding. Stock products you can rely on—stock NSI.