SINGLES(2) 5/16" Knots or Bows Gold Tone Vintage Formal Tuxedo Shirt Stud f20
£24.34
Shirt studs: 0.44" x 0.35" (approx. 5/16" x 5/16" or 8mm x 8.5mm). collar bar: none. Color: gold. 0.25" = 1/4" or 6mm - pretty small for standard button holes. 0.38" = 3/8" or 9mm - also fits standard button holes.
