It will fit the 44-45mm Hublot Fusion Ceramic F-1 Classics Big Bang watch which has 25mm lugs. Made to fit Hublot watches which has 25mm at lugs and 22mm at the buckle. 24MM ALLIGATOR LEATHER BAND STRAP FOR 44MM HUBLOT BIG BANG BLUE RS+4SC+ S/DRIVER.
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