Description Our wine bottle stopper adopts natural rubber material, which can fit the mouth of the bottle or jug well. It is tightly sealed to ensure good air tightness in the bottle. The proper size fits most wine bottles, beer bottles, great for wine making, distilling, and when wine or beer bottles are being opened. Features -Color:As Shown -Material:Natural rubber -Size:3.50X2.50X2.50cm/1.38X0.98X0.98in -Size:3.00X2.30X2.30cm/1.18X0.90X0.90in -Size:2.50X2.00X2.00cm/0.98X0.79X0.79in - The rubber plug is made of natural rubber material, good sealing, which has a long service life. - Simple in structure, very easy to use. The sealing plug can greatly meet your scientific research use. - The amounts are enough to meet your daily or festival usages or replacement demands. - They can make your wine fresh for a longer time, giving you a good using experience. -The perfect gift for friends and occasions: holidays, anniversaries, birthdays, parties, etc.Package list: 30 x Plugs