Features: Made of high quality solid Optical Glass material, provide the great value of clarity and transparency. 77mm diameter bayonet only suitable for 77mm lens. A cool tool for photography, make your photos unique without having to use any effects or Photoshop. Just hold it in front of camera lens and create unique image compositions. Focal lengths of aperture :35mm-85mm are recommended. A new way to watch the world, you can see a novel landscape, night scenes etc. Package Includes: 1X Kaleidoscope Prism 1X Pouch Specifications: Material: Glass Diameter: 77mm Focal length: 35mm-85mm Color: Red/White note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.