Aluminum collar stays size:2.0" 2.5",2.75",3. ... .0 mm Plating:any color you like, engraving logo Specifications:Aluminum collar stayssize:2.0" 2.5",2.75",3.0 ... : AAA+Plating options: 18K yellow gold, Rose gold, blue , black ,gun metal plating,MOQ: 1000 pcs per sizeLOGO, can be engraved ... you ,also pay highest attention to your design and copyright! Aluminum collar stays