I am unable to determine the material as this was not made by me. It appears to be brass with an antique finish. Please refer to the scale in the images for the size. The background grid is also 1cm x 1cm. Other conchos are also available → #concho1942el Suitable for wallets (leather wallets), bags, saddlebags, tool bags, leather jackets, leather vests, belts, hats, caps, etc. Easy customization, just make a hole with an awl and attach with the included screws from the back. The image will change dramatically. Nickel versions of the same design are also available. Offered at a low price. Further discounts for bulk purchases. No discounts for single item purchases.