Ship Size:4.5" x 3" x 1.75" 11.4cm x 7.6cm x 4.4cm
Product Size:4" x 1.25" x 1" 10.2cm x 3.2cm x 2.5cm
Made Of:Cast Steel
Key - Cast Puzzle
Serious Item Code: 8776
A word from the designer:
Two keys appear to be permanently linked and, no matter how you look at it, there is seemingly no solution to unlocking them. However, as a highly popular puzzle since its creation during the 19th century puzzle craze, the keys are in fact separable.
The hint is "Enlarge".