What's Included: Stainless Steel Screws | Brand Name: Sigma Electric | CSA LIsted: Yes | Conduit Compatibility: ;Water pipe, copper tubing and ground rods | Direct Burial: Yes | Material: Copper Alloy | Number in Package: 1 pk | Packaging Type: Polybag | Sub Brand: ProConnex | Trade Size: 1/2 - 1 in. | UL Listed: Yes | Indoor or Outdoor: Outdoor Sigma's Ground Clamps are used to connect bare or insulated copper wire to copper or galvanized steel water pipe or copper tubing. These copper alloy clamps are suitable for direct burial in the ground and concrete. | What's Included: Stainless Steel Screws | For 1/2-in - 1-in pipe and copper rod | For wire range #10 - #2 | For rebar range 5/8-in - 3/4-in