Heavy Duty Ground Clamps - Heavy Duty Ground Clamps can be buried in earth or concrete.Heavy Duty Ground Clamps features include: Heavy Duty Ground Clamps are used to Connect Grounding Conductor to Water Pipe, Ground Rods, Copper Tubing or Rebar up to 1 in diameter Can Accomodate #8 Through 4/0 Gound Conductor can handle just about any size ground wire amp; just about any application Cast of High Strength High Conductivity Copper Supplied with Stainless Steel Set Screws Suitable for Direct Burial in Earth amp; Concrete Provides Maximum Conductivity amp; Strength Direct Burial marked on clamps UL467 Listed for Direct Burial and Grounding Bonding Applications cULus Dimension Measurements = Inches Order Qty of 1 = 1 Piece Below is more info on our Heavy Duty Ground Clamps