Optical Glass Right Angle Reflecting Triangular Prism. Features: Make a Rainbow by Refraction Easily  It Produces Rainbows Using Direct Sunlight and Can Also Be Used for Some Cool Photography Effects 100% Brand New and High Quality Type : Right Angle Reflection Mirror Material: K9 Optical Glass Size: 14x14x87mm/0.55x0.55x3.42" Specifications: Shape: Triangle Angle Tolerance: 3min Surface Quality: 60/40 Material: K9 Flatness: ^/4 Size: 14*14*87 Dimension Tolerance: 0.01-0.1 Model Number: Right Anglr Prism Angle Tolerance: Regular Material: K9 Optical Glass Flatness: Regular Dimension Tolerance: Regular Size: 14x14x87mm/0.55x0.55x3.42" Type: Right Angle Reflection Mirror Use To: Telescope, Scientific Experiment, Teaching Experiment Lamp Feature: Triangular Prism. Rainbow Prism   Package Contents: 1 X Triangular Prism . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.