brain teaser puzzles Educational Toys WT208 Backhand Metal Game Brainteaser Wisdom Challenge Intellectual Training Creative Thinking IQ Magic WT208 Backhand Metal Each Size(Aprox.): 5 x 2.5cm (1 31/32"x1")Thickness:0.4cm (5/32") Intelligence game ,great challenge for kids and adults Age 6+ There are hundreds of different puzzle toys on my store. If you like my store, please add to your favorite. Thank You.