Ground clamps are UL listed for use with either copper or aluminum conductors to copper water pipe, galvanized pipe or steel conduit|All clamps are constructed from tin plated high strength extruded aluminum alloy|PENETROX oxide inhibiting compounds are recommended for all aluminum|Clamps are dual-rated for both copper and aluminum conductors|Maximum flexibility of application|All connectors are tin plated|Provide low contact resistance and prevents galvanic corrosion|All clamps are range taking|180 in-lb installation torque|Slot set screw|8 to 4/0 AWG aluminum, 14 to 1/0 AWG solid, 14 to 1/0 AWG stranded copper conductor range|Made of high strength extruded aluminum alloy|1/2 to 1 in main/primary conductor range|14 to 1/0 AWG (tap/secondary) conductor size