Four Rotor Drones MODERN Cuff Links remote helicopter airplane pilot

I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. cuff links: 0.80" x 0.67" (13/16" x 11/16" or 20mm x 16.5mm). I always try to point out any clear blemishes and condition. 0.25" = 1/4" or 6mm - pretty small for standard button holes.