Multi-function collar stays size:2.0" 2.5",2.75",3.0" width:10mm, ... thickness 1.0 mm Plating:gold,silver,black, engraving logo Specifications: Multi-function ... collar stayssize:2.0" 2.5",2.75",3.0"width:10mm, ... service , if you want to use your company name or logo for our jewelry items, please provide us ...