This Sharks tooth belt buckle is cast in bronze. It fits up to 2 inch belts but works best on 1.5 or smaller. This bronze buckle was molded from an actual fosilized sharks tooth found in the Tampa area. It must have been a monster! Shown on a 1.5 inch (38 mm) belt sold seperately in the accessories or save 5.00 and order the belt with the buckle