Elloapic Brain Teaser Metal IQ Puzzle 8pcs in 1 box adult kids toy Elloapic Brain Teaser Metal IQ Puzzle. 8pcs in 1 box, 8 different shape puzzles, very funny when you challenge them one by one. This is good fot adult kids as gift. Great challenge for kids and adults. The puzzles are made of metal, but very smooth on the surface, will not hurt hand. But as the size is mini, please do not let the kids under 3 years play them alone.