Brain Teasers Metal and Wooden Puzzles for Kids and Adults

?? Metal and Wood Brain Teaser 9 Set for Kids and Adults – All the coils and blocks are smooth and have NO SHARP EDGES for endless play without getting hurt. The links are made from heavy-duty 4.5 stainless steel as well as lightweight and durable beech wood that doesnÂ’t easily bend or break even when thrown or stepped on. Players canÂ’t force them open so there is no chance of cheating. It has also passed the ASTM F963 International Toy Safety Standards and guarantees itÂ’s top-notch quality.