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

It's exactly milled by a skilled machinist in Massachusetts, and it weighs one pound. It's 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 in the package)

HIGHLIGHTS:

• 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

ORIGINS:

• Made in Wisconsin