Copper Ground Clamps - Rigid Conduit Hub 1/2"-1" (1/2" Hub) - Our Copper Ground Clamps - Rigid Conduit Hub are perfectly suited for Rigid Conduits.Copper Ground Clamps - Rigid Conduit Hub 1/2"-1" (1/2" Hub) features include: Copper Rigid conduit ground clamps for bonding Rigid Conduit to water pipe, ground rod, and Copper tubing Cast from high strength High Conductivity Copper Standard Collar and adaptor Steel screws, Zinc plated Hub swings 360deg; for easy alignment UL Listed Dimension Measurements = Inches Order Qty of 1 = 1 Piece Below is more info on our Copper Ground Clamps - Rigid Conduit Hub 1/2"-1" (1/2" Hub)