Finally, a Nautilus-style conversion case that accepts 28.5mm dials and NH3x / NH7x / similar movements without fussing around with files or sandpaper. This case is machined out of 316L steel with brushed front lugs and polished sides. This case set also comes with the sapphire crystal pre-installed. For more value, a screw-down crown and case back are also provided for your convenience. Lug width comes in at 20mm to fit a wide variety of straps. This case set is also available with an optional matching brushed bracelet with solid end links that sit snugly with the case lugs. Facts and Figures: Case Diameter: 42mm including crown guards Lug to Lug: 47mm Thickness: 9.25mm Lug Width: 20mm Comes with:Screw-Down CrownSolid Case Back and Gasket30mm Sapphire Crystal and Gasket (Pre-Installed)20mm Fat Spring Bars