Trick lock puzzles are mechanical puzzles designed to look like traditional locks but require clever, unexpected methods to open — much like performing a magic trick! Bring the magic and intrigue to your shelves with this 12-piece display featuring three distinct trick lock styles. Featuring our best-selling Grecian Trick Lock (TG441) and two new puzzles - Roman Latch Lifter & Egyptian Pin Lock. Part of our True Genius collection -- a best selling brand for stores selling smart, bookish gifts. The display comes with 4 units of each style for a total of 12 units (Currently, only TG441 available as an individual 6-pack for restock)