All straps are about 4 mm thick. Four don't have tang holes punched yet. All come with Panerai styled buckle and will add thick spring bars if needed Derb – 22 x 22 mm – 75/125 mm – 4 mm thick – Spring bar buckle. Hand Glazed leather in various shades of brown Price – $75.00 Urushi – 22 x 22 …