20 Pcs Brain Teaser Puzzle Unlock Interlock IQ Test Game Wooden and Metal Wire Puzzle for Kids and Adults

Feature: ? The puzzle looks simple, but it contains many mysteries. They are easy to disassemble but difficult to assemble. ? Train your brain. It can make your brain sharper, develop intelligence, challenge thinking and patience. ? Join this group of brain teasers and share with your friends, family or colleagues. ? These brain teaser puzzles may keep children away from phones or other electronic devices. Package Included: 16 x Metal puzzle 4 x Wooden 3D puzzles Precautions: 1. Children must be under adult supervision. 2. Do not place them on the floor or table. 3. Do not put the toy in your mouth to prevent children from swallowing small parts in the toy.