Ground Rod Clamp Conductor, 25 packDescription Ground Rod Clamp Conductor 1 2" Our Ground Rod Clamps are used to connect bare copper conductors directly to a driven ground rod or rebar. These copper alloy ground rod clamps are suitable for direct burial. Designed for a 1 2" rod, cast from high strength solid brass alloy this product includes a bronze screw. Specifications Part Number Rod Size Dim A Dim B NPNB 780 1 2" 1. 250 . 875 NPNB 781 5 8" 1. 275 . 593 NPNB 782 3 4" 1. 445 1. 030