Steel City 508, 2-1/8″ Jaw, 1/2″ Tap, Iron, Square Head Screw, Beam Clamp, 1 pc. Steel City 52151-3/4, 4″ x 1-1/2″ x 4″, Electrical Square Outlet Box, 1 pc. We have new products in manufacturer boxes, as well as loose and shelf-worn quality products to save you even more money.