The Pebble Bead has 3 pieces in a package. Each piece measures 1" x 3/4" x 5/16". Each bead has 4 loops on the back for stringing into a necklace, bracelet, earring, ring, keyring or add dangles. The Pebble Bead is a wonderful fusing accessory. Each piece has 6 cavities that can be filled with glass dots (created from frit), polymer clay or any other glass you choose. Each cavity measures approximately 1/4" round x 1/16" deep.