🐾【VARIETY OF MARBLE RUN KITS】:This marble run kit contains 75 marble building parts, 30 colorful balls and 30 glass marble balls. Marble tracks include curved, wheels, ramps, S-turn slide, U-turn slide, windmills, gradual curves, O-turn rails, centrifugal funnels, rugged rails and many other types of marble rail. You can see the ball running fast on different types of tracks, and observe how it moves on different tracks. Children will have fun on different tracks without feeling bored. 🐾【FREELY BUILD TOWERS OF DIFFERENT LEVELS】:There is no fixed shape, children can give full play to their imagination to create models freely. Parents can participate in the easy mode, medium mode, and hard mode of the marble game together with their children, and they can create different marble pattern shapes according to their own preferences. We will also include one of the instructions as a demonstration. 🐾【EDUCATIONAL TOY STEM SUITABLE FOR ANY CHILD】:This marble run comes with easy assembly operating instructions and children can build more different shapes. Children need to consider the design of the track and the gravitrax, etc. This gives full play to the child's spatial imagination, logical thinking, color and shape recognition and hands-on ability. Through observing the movement path of the ball, children can have fun, accomplishment and learn to observe. 🐾【SAFE MARBLES FOR KIDS】:The parts of this marble run are made of safe and high quality plastic, which is not easy to break. The smooth plastic surface saves you from worrying that these marble parts will scratch your children's hands. Each piece of marble is very tightly connected, so you don't have to worry about falling off when kids build it. Warm tip: Please be careful not to let your child swallow the balls. 🐾【PERFECT GIFT SURPRISE】:The marble run set uses a beautifully packed color box, and the components are in different colors to match the classic and beautiful styles, definitely a popular birthday/holiday gift for kids. It is very suitable for children to use it as an entertainment project during parties, after school, weekends, and even all other holidays.