12mm Transparent Clear Domed Glass Cabochon Cover for Iron Hair Bobby Pin DIY Making, Nickel Free, Antique BronzeSize: Hair Bobby Pin: about 54mm long, 14mm wide, finding: about 14x14mm; tray: 12mm; Glass Cabochons: about 12mm in diameter, 5mm thick.Paste the lovely pattern or put some tiny beads in the tray, then cover with the clear glass cabochon, a unique hair bobby pin will be finished.