Challenge your mind with the precision-crafted mechanical puzzle that started it all.

Six interlocking Brass or Stainless Steel bars

3" x 3” x 3” with lathe-cut, bull-nose ends

Doubles as a paperweight and playful desk distraction

Six different notched brass bars interlock in one specific way to create a unified "jack" shape.

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

Available in solid brass or stainless steel

1/2" diameter pieces

Bull-nose ends, lathe-cut

3" x 3" x 3"

Made in USA

CALIFORNIA WARNING: This product can expose you to lead, a chemical which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to: www.P65Warnings.ca.gov

*PLEASE NOTE THIS ITEM IS FINAL SALE.