A slope educational toy composed of plastic parts of various shapes. Assembly type that allows you to learn while playing with colorful parts. - Colors: Red, Blue, Green, Yellow - Material: Plastic - Type: Educational toy - Features: Parts with rotating propellers - Composition: Includes parts of various shapes Thank you for viewing. These are 40-piece blocks that you can assemble into various shapes and play with by rolling a ball, like a Pythagoras Switch. It expands the imagination, and the children loved it. There are scratches and dirt due to use, but I think there is no problem in using it. We will disinfect with alcohol before shipping.