20Pcs Brain Teaser Puzzles,Unlock Interlock IQ Game,3D Puzzle Toy Brain Teaser,Wooden Mind Puzzles,Mind Game Toys Set for Kids, Adult

Brain Teaser Puzzles - Get an assor ent of 16 coil wire puzzles and 4 wooden block puzzles of different shapes from easy to hard levels. Each 3D brain teaser educational toy comes with its own instruction manual. You can read when you need to.Safe and Durable Material - The surface of the wooden Luban lock is smooth without rough thorns, and the corners are also relatively smooth and not sharp. Our brain puzzles are made from heavy-duty 4.5 stainless steel that doesn’t easily bend or break even when thrown or stepped on.Applicable to All Age Groups - This brain teaser puzzles for adults is perfect size makes it easy for small and large hands to play comfortably this brain teasers . Everyone can enjoy these unique 3d puzzles for kids, from children, teens, and adults. Caution, not suitable for kids 5 years old and below.Exercise Brain Flexibility - Our brain teasers for adults with interesting logical thinking and perfect for the development of the brain. These manipulative links and bl