I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: 0.52" x 0.50" (1/2" x 1/2" or 13mm x 12.5mm). collar bar: none. tie tack/bar: none. Color: silver, white, black. 0.50" = 1/2" or 12.5mm - this is fairly large for standard button holes.
