Bamboozler puzzles are interlocking brain teasers or sometimes known as burr style puzzles. This is a set of 4 unique Bamboo puzzles along with a bonus twisted nails puzzle. The object of each puzzle is to take a apart into pieces through clever movements. NO Force is required. Once apart the second challenge is to reassemble the puzzles. Often reassembly is more challenging.Each Bamboozler Puzzle is medium difficulty. Each have a different interlocking design. Each puzzle presents a fun and unique challenge. Puzzle difficulty ratings are subjective and your experience could be different. Bamboo puzzles include a solution. As a bonus the world-famous twisted nails puzzle is included. Try to separate and then re-join the two identical looking carpenter's nails.This is a bundle of 5 brain teaser style puzzles. Generally suitable for ages 10 to 105 years. Bamboo puzzles are individually boxed. Twisted nail puzzle comes in clear plastic bag. Bamboo puzzles are approximately 3 x 3 inches.