I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: 0.85" x 0.60" (7/8" x 5/8" or 21.5mm x 15mm). I always try to point out any clear blemishes and condition. collar bar: none. tie tack/bar: 1.29" x 0.25" (1-5/16" x 1/4" or 32.5mm x 6mm).