UNIQUE DESIGN - This puzzle box features 2 puzzles in 1, with the objective of turning the 6 hardwood wheels to make all columns add up to 100 SUPER DIFFICULT SIDE - The challenging side of the puzzle has 12 columns of numbers, with over 248,000 possible permutations and 1 solution FLIP SIDE CHALLENGE - The flip side has 6 columns of numbers, still challenging with over 7700 permutations and 1 solution BEAUTIFUL DESIGN - Made with light-colored wood (rubberwood, maple, or ash) and deeply laser engraved numbers. Our own design, made in our Florida shop. Designed and made in USA by Creative Crafthouse, a small family business in Hudson, FL. Thank you for your support. Another of our unique designs and this one has 2 puzzles in 1. The object of both puzzles is to turn the 6 hardwood wheels such that all columns add to 100 at the same time. There is a SUPER difficult side with 12 columns of numbers. There are over 248,000 possible permutations with 1 possible solution. A hard level 5 puzzle. The flip side has 6 columns of numbers. It is still quite challenging (level 4) with over 7700 permutations with only 1 possible solution. The numbers are all deeply laser engraved into the puzzle. Woods used are rubberwood, maple, or ash (all light colored wood that lasers well) depending on what I have in the shop. This is a beautiful puzzle that displays well. Made in our Florida shop.