Features: Pure Solid Stainless Steel materials It"s classical design style and made for your luxury watches. It can be applied to watches Strap with standard straight lug ends,such as Tissot, Longines, IWC, Rolex, Mido, Omega, Armani, Cartier, DW, Tudor, Movado, Rado, Hamilton, Titoni, Certina, Calvin Klein, Swiss Military, MontBlanc, Girard-Perregaux, Carl F.Bucherer, Armani, Kronsegler, Jaeger, Invicta, Zenith, Ranches, Timex, DAVOSA, Oris, etc. Four colors, each color with 7 kinds of sizes. Every watch band has a width number, which can help you to choose the correct replacement watch strap clasp. Specifications:Butterfly clasp material: Stainless SteelButterfly clasp Color: Silver, Gold, Rose Gold, BlackSize:10mm,12mm,14mm,16mm,18mm.20mm,22mm Package includes:1 X Stainless Steel Butterfly Clasp