Features: 1. Made of high-quality optical glass, the prism part can be removed for separate use. 2. Precise cuts provide good reflections and light separation. 3. Comes with a stand, convenient for changing the prism angle. 4. Can be used to teach about the physics of light spectrum. 5. Used in scientific experiments involving light spectrum. Description: Triangular prism with a base is very convenient for changing the prism angle. It can be used in science classes from preschool to high school as demonstration equipment to study light dispersion. It can also be used as a toy to develop children's intelligence. Features: 1. Made of high-quality optical glass, the prism part can be removed for separate use. 2. Precise cuts provide good reflections and light separation. 3. Comes with a stand, convenient for changing the prism angle. 4. Can be used to teach about the physics of light spectrum. 5. Used in scientific experiments involving light spectrum. Specifications: Material: Plastic stand, optical glass prism Stand Color: Black Size (L*W): 17*12cm/6.69*4.72in Weight: Approx. 109g Package Includes: 1 x Optical Triangular Prism 1 x Black Stand Instructions: Place the prism under sunlight. Rotate the prism until the light shows seven colors on a wall or white paper. Note: Please allow for slight deviation due to manual measurement. Thank you for your understanding.