Large-Format Corker handles up to 42 mm corks A corker that can handle a cork up to 42 mm in size has been released by Napa Fermentation Supplies. Everyone has been looking everywhere to buy, rent and/or own this piece of equipment, in order to drive bigger than average corks into large-format specialty bottles. This unique concept compresses the cork by pushing it gradually through a progressively smaller cone. Typically, the industry has relied on corker jaws, which take a cork and compress ...