Permaground U-Bolt Ground Clamp, Mechanical connection, Copper material, UL 467 Listed, C22.2 No. 65-03, Copper Primary Conductor 2/0 Str - 4 Str and 2/0 Sol - 4 Sol, 1 conductors, 1 ports/wireways, pipe size 3/8, Drive Type Main 3/8 External Hex, 5/8, 3/4 nominal ground rod,