Description: This is a newest drawing ruler. It brings lots of fun to kids and improve their physical and mental abilities. Various interesting paintings can be drawn by this intellectual drawing ruler set because of the unique combination of art and teaching methods Features: Made of high quality plastic, solid and durable. Light weight,easy to carry and storage. All finishes are safe, eco-friendly and non-toxic. The classic way to create countless amazing designs. Bring lots of fun to kids and improve their physical and mental abilities. Various interesting paintings can be drawn by this intellectual drawing ruler set because of the unique combination of art and teaching methods Specification: Condition: A brand-newMaterial: PlasticColor: Shown as picturesSize: 10 x 10 x 2cm/3.94 x 3.94 x 0.79 inch(Approx.) Package Included: 2* Ringed gears 15* Wheel gears 1* Rack 3* Irregular wheel gears 3* Painting brushes 1* Glue 1* Design guide. Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.