Smart Game: A ring puzzle set comprises 24 models with various degrees of difficulty to offer challenges to those who enjoy them. Instead of staring at a screen all day, it's a good way to spend your time by playing a metal puzzle brain teaser. You need to find a way for unlocking the two parts by whatever ways you use. Release Pressure: There're different types of unlocking toys can relieve stress and relax. Unlocking them may be takes a long time, which can also test fully your patience and attentive. It can also increase the difficulty according to their needs. Metal Wire Puzzle set suitable for kids and adults, adult mind teasers are small and light, which can be easily taken to car, school, home or office, convenient to exercise your hands on ability Hand Eye Coordination: Different puzzles with different level of difficulty, a number of actions and processing visual input.