They are made of cast iron, they have been tested and they will work although the wiring is original, and appears to be sound. The part that mounts to wall is 7 inches tall by 4 inches wide.
The round part is 4 inches diameter, and 4 3/4 inches tall to where the light would screw in, total height is 12 inches. I try to describe items as best as I can so what you see is what you get. The item "Pair of Antique Outdoor Cast Iron Porch/Graden Light Sconce Heavy Duty" is in sale since Friday, November 17, 2017. This item is in the category "Antiques\Architectural & Garden\Chandeliers, Fixtures, Sconces". The seller is "nothenorm" and is located in Rittman, Ohio.
This item can be shipped worldwide.