I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: 0.78" x 0.79" (3/4" x 13/16" or 19.5mm x 19.5mm). collar bar: none. I always try to point out any clear blemishes and condition. tie tack/bar: 0.42" x 0.42" (7/16" x 7/16" or 10.5mm x 10.5mm).
