Professor Puzzle Albert Einstein's E = mc2 Puzzles Box

Brand: Professor Puzzle, The box contains three separate metal disentanglement puzzles shaped like elements of the famous equation. The goal is to separate the two interlocking pieces of each metal puzzle and then reattach them. Rated as medium/challenging by Puzzle Master. (Level 2 out of 5 on the Professor Puzzle scale). Recommended for 13 years + *Comes from a smoke free and dog friendly home*