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The Tekno Expander cork is made of stainless steel with a hand polished, anodised aluminium aloy handle. By turning the handle an expanding device is activated which helps to improve the grip of the cork in the neck of the bottle. The Tekno Expander stopper has been designed with a special expansion system. The handle can be turned to actuate an innovative mechanism that increases the seal of the stopper on the bottle neck, thereby offering longer conservation of the contents.
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