I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. tie tack/bar: 1.79" x 0.30" (approx. 1-13/16" x 5/16" or 45mm x 7mm). collar bar: none. 0.25" = 1/4" or 6mm - pretty small for standard button holes.
The Pierre Cardin Monogram P Initial Letter Vintage Tie Bar Clip is ideal for those seeking a classic yet modern design for formal occasions.
