【Brain Teaser Game Puzzles 】- Brain teaser toys help to train your eyes and hands coordination, problem solving skills, expand your mind, while sharpening your reasoning skills. It is also a test of your creativity, observation, space, reasoning and memory to relieve stress and keep your brain focused 【Durable and Child Safe】- Made of durable metal material which can keep the puzzle intact shape, you can use it for many years, non-toxic material, absolutely no sharp/cutting edges 【Party Favor】 - These fun intellectual unlocking toys are perfect as party favors for gift bags and Christmas stockings. It was a great party gift at your next birthday party. Provides hours of play time. For boys and girls aged 13 and up up 【Learning Spatial Reasoning 】- The position of these seemingly simple puzzle balls varies greatly. He may have over 100 wrong angles and only one is correct. You have to take everything apart and figure out how to put it all back together. 【IQ Test Puzzle】- This IQ test puzzle toy is made of metal and has a delicate design. It is a portable educational toy with high IQ decompression function and novel and beautiful appearance. It can be used as a decoration and a collector's item Package Quantity: You will receive 3 puzzle toys with different shapes and difficulty levels (as shown in the picture), so you can enjoy the game experience and challenge with different difficulty levels Material: Aluminum alloy. Customer Service： If you are not completely satisfied with your 3D Unlock Interlocking Puzzle, please let us know and we will give you a satisfactory solution