Feuerzeug means "lighter" in English and it is a puzzle by the infamous "Roger D".  Roger D is a mysterious puzzle designer from Germany and his actual identity is known only to a few. Roger is known throughout the puzzling world for his extremely difficult and high quality machined aluminum puzzles. His puzzles are produced in relatively small numbers and are highly collectible, they are also sold with no information as to the objective of the puzzles and this is classed as adding an extra degree of difficulty to them.
Feuerzeug is milled from a solid block of aluminum with brass "flame".  The front features a fancy insignia with Roger's initials.  There is a recessed hex bolt on the top of the puzzle also. A really great new puzzle for the Roger D. collection!
 

• See at Puzzle Master