These solid puzzles are laser cut from 1/8" thick 304 stainless steel and measure 5"x5" (3mm x 127mm x 127mm). The result weighs almost 1 pound (400g) which is satisfyingly heavy and more than a standard can of soda.
Since both sides of each piece look identical this is more difficult to solve than 20pcs might suggest, some solve it in 10 minutes and some take much longer.  Perfect for a coffee table or desk toy.

To preserve the fun of assembling a brand new puzzle without knowing the solution, the pictured sample is a prototype with a different pattern than the one I will ship.  If you would like a picture of the final pattern then please ask, I'm happy to send it to you.

Made in the USA.

Caution: contains small pieces which are not suitable for very young children.