I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: 0.75" x 0.75" (3/4" x 3/4" or 18.5mm x 18.5mm). collar bar: none. I always try to point out any clear blemishes and condition. tie tack/bar: 0.39" x 0.39" (3/8" x 3/8" or 9.5mm x 9.5mm).
