1/2" to 1" ground clamps are used to ground bare armored ground cable to water pipes, ground rods, rebar or other structural members that will ensure positive grounding to the earth. These clamps may be used on pipe sizes 1/2" to 1" accommodate armored bare wires. Garvin Industries” unique labor saving design allows the upper portion of clamps to slide open easily and, attach to structural pipes and rebar without needing to remove the screws. The rotational movement of the clamps allows a quick removal if necessary.