This Heavy Duty nail puzzle is made from two 5 - 5.5 inch common steel nails ( 1/4 inch diameter )
It can keep mischievous children busy for hours.
My first one was purchased about 50 years ago and still looks as good as the day it was purchased.
It will last for generations if you don't lose it and it doesn't get stolen.
(Dollar bill and magnet base not included)