KnobStoppers have been described as fun, whimsical and beautiful. Although marketed as a Wine Stopper, the KnobStoppers also makes a perfect stopper for all types of bottles. Olive oil is a great example. Each KnobStopper is handcrafted from an actual vintage door knob, complete with the chipped paint and flaws that give the stoppers such vintage charm. The hardwood-reinforced cork promises the consumer a product that is built to last.