Multi-function collar stays size:2.0" 2.5",2.75",3. ... 1.0 mm Plating:gold,silver,black, engraving logo Specifications: Multi-function collar stayssize:2.0" 2.5",2.75",3.0 ... +Plating options: 18K yellow gold, Rose gold, blue , black ,gun metal plating,MOQ: 1000 pcs per sizeLOGO, can be engraved by ...