It may take an infinite amount of time to solve this mind-boggling metal brainteaser by designer Doug Engel.
A great gift for people who love brainteasers and trick puzzles.
Will you be the one to unravel the mystery?
Try to take the four nickel-plated pieces apart then fit them back together. 2-1/2'' in diameter.
Solution included.

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 3.2 inch
Height : 3.1 inch
Length : 3.2 inch

Item Weight: 7.2 ounce (View shipping rates and policies)
Shipping Weight: 7.2 ounce (View shipping rates and policies)

ASIN : B013TPXQ58