Brain Teaser Puzzle Ring Set of 8 Toys Educational Brain Training Puzzle Game Mystery Ring Hand Game Toys Solving Puzzles Killing Time Educational Toys Brain Teaser Puzzle Ring Set of 8 Toys Educational Brain Training Puzzle Game Mystery Ring Hand Game Toys Solving Puzzles Killing Time Educational Toys Fun Children Adults Product Details Puzzle Type Disentanglement Number of Pieces 8 Product Dimensions (L x W x H) 11.5 x 2.8 x 16 cm Theme Mystery Included Components Main body * This is a set of 8 brain teaser puzzles that both adults and children can enjoy. You can have fun training your brain in your spare time. * How to play: It's a success if you can remove the two rings without using force! * You can have fun and exercise your brain. * For children's study and education. It also improves the mental agility of adults.