The Jack Puzzle is comprised of six different notched brass bars that interlock in one specific way to create a unified "jack" shape.

It is exactingly milled by a skilled machinist, and weighs just over one pound. A desk object, a paperweight, and a true distraction—but be forewarned, if you take it apart, you might not be able to figure out how to put it back together…

(Hand-drawn assembly instructions are included) 

Specifications:

• 1/2" Diameter bar
• Weighs approx. 1 lb
• Measures 3" X 3" X 3" (assembled) 
• Solid Cartridge Brass (alloy 260 – 70% copper, 30% zinc)
• Bull-nose ends, lathe-cut