Mini Metal Wire Disentanglement Puzzles _ Bundle of 6 Puzzles _ Plus Bonus Twisted Nails This is a set of 6 (Six) unique mini metal take-apart and put-together brain teasers. Six different styles. Each individually boxed. Includes bonus Separate the Twisted Nails Puzzles. Great for testing your logical & systematic take-apart skills Medium difficulty. But everyone's experience will differ.