Nothing gets the gears turning like a puzzle where you have to…well, turn the gears. And this brain teaser will do exactly that. Not only is it a challenge for those with curious minds, it’s also a  work of art that’s meticulously crafted of quality materials. Move the gears to navigate ball bearings through the maze. Once you’ve mastered doing one ball bearing at a time, try doing both simultaneously. Are you clever enough to solve Double Trouble?