These nuts and bolts are the hardware for your brain. Challenge yourself mentally with our brain teaser games. Simply unscrew the nut from the bolt. Good luck! Game Play Information: Number of players: 1 to 1 Age of Players: 8 to 99 Years Skill level: Intermediate Time to Learn in Mins: Information Not Available Time to Play in Mins: Information Not Available Profanity: No Batteries Included: Not Required Battery Details: Choking Hazard: Yes Additional Information: Publisher: Go! Games Item ID: 400069337053 Product Dimensions: 4.75" x 3" x 1.75" Language: Bilingual (English/French) Country of Origin: CN