I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: 0.75" x 0.49" (approx. 3/4" x 1/2" or 18.5mm x 12.5mm). I always try to point out any clear blemishes and condition. 0.50" = 1/2" or 12.5mm -this is fairly large for standard button holes.
