I did not make this, so the material is unknown. It has a color like antique-finished brass. There are individual differences in the darkening. Other conchos are also on sale → #concho1942el Please see the scale in the image for the size. The background squares are also 1cm x 1cm. It's an easy custom: just make a hole for the screw on your wallet (leather wallet), bag, belt, etc., and pass the screw through from the back to tighten. You can think of it as a sturdy badge. You can use it in various ways depending on your ideas.