These Tapered Corks from Youngs are perfect for bottling up your wine, beer or cider. This pack of 30 ensures you have enough for various bottles, please note that they should not be used in wine bottles which are being laid down. The corks have elasticity combined with its near-impermeability makes it suitable as a material for bottle stoppers especially for wine bottles This cork has an almost zero Poisson\'s ratio, which means the radius of a cork does not change significantly when squeezed or pulled. This handy tool is perfect in the bottling process of your homebrewing. Tapered Cork Features Youngs Tapered Corks (30\'s)/5509 Cork Wine/beer/cider bottles Do not use when bottles are laid down Elasticity combined with near-impermeability Youngs\' Ref. MPN: 5509Colour: CorkSizes: One SizePM Ref: 415483