These are connectors, with 2 holes in them and they look like stretched out bat wings. They measure 24mm x 27mm (25mm = 1 inch). They are stampings that are hollow backed. It's hard to see in the second picture, but they are hollow in a dimensional way.
These are made of solid brass that has been professionally blackened to a midnight pitch black. Made in the U.S.A.
great jewelry components, very lightweight and versatile