Bracelet connectors, vintage jewelry supplies, silver plated brass, transitional Victorian Design leaning toward Arts and Crafts period. Center flat section is 18mm, you'll need five to six to make a bracelet----usually til you figure in the jumps to connect and the clasp (generally I use either a lobster connected by several jumps or a nice round box clasp). They are about 35mm square, brass base,silverware silver plate. Some use only THREE and then use chain to catch the back. They also can be used as a centerpiece to make an awesome Victorian festoon necklace as shown in the photo below....B'sue built this one using this very finding in brass ox with brass ox bead and link chain. Sold by the piece. Check out the gorgeous earrings made by mixed media jewelry artist, Joy Delyn Turner, using this piece as a base. You will find them in the secondary photo which is a collage of pieces, down in the bottom right corner. The top piece is our domed stamping in the Toledo, Spain style, which we carry in MANY of the finishes on this site, as well as raw, unplated brass.