Description If you are looking for color filter boards kit for teaching, then your research is here. That's because our products can meet your needs. It is made of plastic materials and craftsmanship, durable and practical, and can provide you with stable working performance. Features - Color: Random Color. - Material: Plastic. - Size: 5.00X5.00X0.20 cm/ 1.97X1.97X0.08 inch. - Made of plastic material, thickness provides a good saturation of color. - Exploring property of optics and color, early physics optical science educational toy. - Color filter are widely used because they can create different visual effects. - Teachers or students can create other color effect by putting two or several sheets together. - It helps children learn different colors combination, which is a good tool for teaching. Made of plastic material, thickness provides a good saturation of color. Exploring property of optics and color, early physics optical science educational toy. Color filter are widely used because they can create different visual effects. Teachers or students can create other color effect by putting two or several sheets together. It helps children learn different colors combination, which is a good tool for teaching.