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!PRODUCT DETAILS 1/2" Diameter bar1 lb3" X 3" X 3" assembled Solid Cartridge Brass (alloy 260 – 70% copper, 30% zinc)Bull-nose ends, lathe-cutCustom branding available upon requestABOUT THE BRANDCraighill is a design company engaged in developing, manufacturing, and selling enduring objects that ignite a sense of wonder. We believe that understanding more about how a product is made, and the reasons behind its design decisions, can increase appreciation for it and discourage a culture of consumption and waste. Our wide array of products are informed by the specific production capabilities of our manufacturing partners, and unified by a design philosophy that marries efficiency and exploration.