Feature: 1. A beam of light bends as it passes through the prism, then the prism disperses the light into various colors in the rainbow. 2. The equilateral prism with three 30mm equal sides. 3. Surfaces and edges are well polished without burrs. 4. Crystal clear prism has better light transmittance and refraction effect. 5. Made of K9 optical that has excellent performance. 6. For teaching experiment, optical experiment promoting, rainbow DIY, taking pictures, etc. Specification: Features: A beam of light bends as it passes through the prism, then the prism disperses the light into various colors in the rainbow. The equilateral prism with three 30mm equal sides. Surfaces and edges are well polished without burrs. Crystal clear prism has better light transmittance and refraction effect. Made of K9 optical that has excellent performance. For teaching experiment, optical experiment promoting, rainbow DIY, taking pictures, etc. Specifications: Type: 30x30x100 / 30x30x150 / 30x30x200 (Optional) Side Length: 30mm / 1.18in Item Weight: 100g / 169g / 346g Material: K9 optical Packing List: 1 * Prism Package List: 1 * Prism Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!