The Umbuster is an umbrella so deadly and surreal it could only be at home in the hands of John Steed and Mrs. Peel. Even the legal warning for this lip-splitting brolly is odd:

The Umbuster has been classified a Class 5 weapon by good and upright men and women of the Victorian Police, and is considered similarly so in many countries. To have and to hold this accessory requires a weapons licence and, or gun licence.

Usually this kind of strangeness is confined to the world of the concept design, but eccentric designer Sruli Recht's umbrella and aluminum knuckle-duster mashup will actually be on sale for $330.

Designer's page [Sruli Recht via Book of Joe]

Product page [Birkiland]