Nicely Neat Wine Saver Vacuum Pump Preserver With Date Marker, Professional Grade Vacuum sealer; keep your wine fresh for a longer period of time; our professional wine stopper creates a vacuum in your wine bottle with a few quick pumps maintaining an airtight seal Leak proof; 100% leak-proof; bottles can be placed horizontally for storage; while many other wine stoppers will leak when the bottle is stored horizontally, our stopper will not leak Brushed stainless steel; the inner diameter is 1.27 inches (3.2 centimeters) The date dial marks the date of bottle corking; this feature allows you to know whether the wine is good to drink or better to be used for cooking 2-year warranty; here, at Nicely Neat, we want you to be satisfied with your purchase; you are backed by a 2-year warranty on this product so you can buy with confidence Wine Sealer: 3 x 1.9 x 1.9 inches (7.6 x 4.8 x 4.8 centimeters) Inner Diameter: 1.27 inches (3.2 centimeters)