Agglomerated champagne cork 28 mm x 44 mm.
Pressed (agglomerated) corks are denser and more rigid than natural corks. As a consequence they need a sturdy floor corker to compress the corks enough, we recommend the floor corker for champagne bottles.
The bottles should be stored standing for a few days after corking while the cork swells, and then on its side so that the cork does not dry. Wire cages are recommended for carbonated beverages.