Size: 8.8CMWeight: 50 grams.Function: red wine preservation.Material: zinc alloy + corkThe wine is best to use a dedicated pumping vacuum wine stopper， no conditions with gin plug back， put the bottle into the wine cooler or refrigerator etc.， erect display. Usually， the white Wine open after 3-5 days can be saved in a bar or refrigerator freezer. Red Wine usually can be opened after the cabinet or refrigerator to save about 1 weeks. But if it is not a good wine plug， open the wine at room temperature， not to store more than 2 days， otherwise it has been possible to degenerate. Remember. This wine is simple and easy to use. Quality is very good! 15-20mm for bottle diameter!