Knobstoppers are vintage "knobs" used as bottle stoppers. The perfect gift for the wine lover in the family - or for the person who has everything. Choose from glass doorknobs, decorative metal doorknobs. Each stopper is crafted with a hardwood reinforced cork and shaft. Remember, all stoppers are uniquely different - styles within each choice vary. What a fun, unique gift. Not only is it stylish, it's recycling too! Knobstoppers are uniquely crafted with a hardwood reinforced cork and shaft.