Mini Bamboozlers Wood Take-Apart Puzzles _ Bundle of 4 Unique Puzzles_Plus Bonus Bent Nails Puzzle 4 Unique bamboo wood take-apart and put-back-together brain teaser puzzles. Bonus Separate the Twisted Nails metal puzzle. Bamboo puzzles are approximately 2 inches wide each. Test your logic and discovery skills with interlocking style puzzles Bamboo is an environmentally friendly, fast-growing, semi-hardwood, solid material. Durable and easy to handle.