Minerallac® Beam Clamp, 1/2 to 3/4 in Conduit, 1/8 to 1/4 in Flange Width, Flanged Mount, 75 lb, For Use With: 1/8 to 1/4 in Flange, 1/2 in and 3/4 in EMT/Rigid Conduit, Black, 2-Hole, Spring Steel, Zinc Phosphate/Oil, 3.1 in H x 2.07 in W x 1.45 in D