3/4 in offset nipples are used to connect two boxes or enclosures when knockouts are not in line, they offset the conduits by 3/4 in Garvin Industries offset nipples have a rugged metallic construction to ensure mechanical protection and durability. They also reduce the need to do offset conduit bending. GARVIN® Offset Conduit Nipple, 3/4 in Size, For Use With: Rigid Conduit