The Old Time Bolt Puzzle is a funny little pocket puzzle. A standard 3/8 bolt with a gold lock washer secured by a welded nut. Get the gold lock washer off. It absolutely can be done. Picture is worth a 1000 words but you still gotta do some thinking. Each Old Time Bolt puzzle comes packaged with a solution inside. These have a space on our Old Time Pocket Puzzle display. Also available in a Bolt Puzzle Only bulk display of 50 unpackaged.