Tungsten collar stays size:2.0" 2.5",2.75",3. ... .0 mm Plating:gold,silver,black, engraving logo SpecificationsTungsten collar stayssize:2.0" 2.5",2.75",3.0" ... mmPlating:gold,silver,black,engraving logo Jewelry Type: Stainless steel collar stays Material : 316L S.Steel , 304 S.Steel, ... options: 18K yellow gold, Rose gold, blue , black ,gun metal plating,MOQ: 1000 pcs per sizeLOGO, can be engraved by ...