ITEM NAME:Metal Ring Solution Intellectual Deduction Unlock Puzzle Brain Teaser Conundrum Description: 100% Brand New and High Quality Good for creative thinking and improve both your IQ & EQ Very classic and quite interesting. The toys may look simple, but they contains lots of mysteries Ideal gift for adults and kids. Develop and promote creativity, patience and ability of practice After getting each puzzles solved by yourself, then you will get achievement. We are never too young to start training our brain, and never too old to stop The toys are wonderful tools to interact with friends who don't speak the same language Specification: Material: Iron Size: 11×5.5cm Package Includes: 1 Piece Metal Unlock Puzzle Note: Due to the hand measurement, there have size error about 1-2cm SKU: DMO0015999461010070.We are never too young to start training our brain, and never too old to stop. Ideal gift for adults and kids. Develop and promote creativity, patience and ability of practice. Material: Iron. Very classic and quite interesting.