Features: -There are 197 pieces in total, and all parts are interchangeable, so there are endless models that can be created. -With a rotating discs, spiral staircases, T-shaped forked roads, it brings different visual effects and more fun. -Great for improving hand-eye coordination, problem-solving skill, enhancing pride, sense of achievement, and thus promoting a healthy sense of self-confidence. -Great as a children's birthday gift, Christmas gift, after-school entertainment, etc., suitable for children over 3 years old. -You can build a variety of structures such as ramps, tunnels, windmills, etc. When you are finished, throw the marbles out of the hole at the top and watch them slide. Specification: Colour: as shown Material: plastic+glass Suitable for: children over 3 years old Package Included: 1x Marble track set