Don't use this wine opener to sparkling wine or plastic cork.
Push and pull the outer tube equably. Overexertion will cause temperature of outer tube rise sharply. High temperature will intenerate the plunger inside and affect the actual performance.
Reduce pumping force when the cork become flexible.
Stop to use this wine opener when the outer tube is hot, it can be used again when it gets cooling down.
Don't used to Champagne,Sparkling wine.
Colour: A