Heavy Duty Lay-In Ground Clamp 2-1/2" - 4" - Lay-In Ground Clamps Acccomodate Large Awg Ground Wires with ease.Heavy Duty Lay-In Ground Clamp 2-1/2" - 4" features include: Used to Connect Ground Conductor to Water Pipe, Ground Rods, Copper Tubing or Rebar up to 1 in diameter The Ultimate Lay-In Ground Clamp for large ground wires Can Accomodate #8 Through 4/0 Gound Conductor can handle just about any size ground wire amp; just about any application The lay-In Feature Provides Fast Easy Insertion of Ground Electrode Perfect for Continuous Loop Ground Grids Lay-in ground clamp suitable for direct burial in earth amp; concrete Direct Burial marked on Ground Clamps Cast of High Strength High Conductivity Copper Provides Maximum Conductivity amp; Strength Supplied with Stainless Steel Set Screws UL467 Listed for Direct Burial and Grounding Bonding Applications cULus Dimension Measurements = Inches Order Qty of 1 = 1 Piece nbsp;Below is more info on our Heavy Duty Lay-In Ground Clamp 2-1/2" - 4"