8 Square Inch Beam Clamp. Cast bronze 8 square inch bonding plate with two 2-way bolt pressure cable holders. For primary bonding to beams and similar flat metal protrusions. Stainless steel bolts and washers. 3-1/4 x 4 in. (82.6 x 101.6 mm); approximately 2 lb 2.1 oz. (967 g). Also available in tinned.