Corkscrew

grabcad

A typical screw extractor employs a modified version of this invention. Typically used to remove rounded or damaged bottle and jar necks that won't unscrew without the special device being forced into place on them by an ingenious user. This marvelous invention has indeed come a long way! It typically includes one sturdy metal spiral coil spring at the top, attached with powerful screws directly into it - a feature of which helps protect people from the device's harsh edges during removal process when dealing hard-to-remove jar tops where most people need these screw extractors for everyday usage around kitchen counterspace area inside small house where nobody want mess outside living rooms so let go.