Satin steel buckles in the Omega Planet Ocen style. They come in 5 sizes (16-18-20-22-24-26mm). They have a speed-pin fastening closure and their tongue is approximately 6mm wide. Feel free to contact me for whatever questions you might have.
Brand New Steel BUCKLES For OMEGA Planet Ocean Style Watch Strap 16-18-20-22-24-26mmBracelets, Buckles & Straps