Feature: 1. Made of quality optical and hardware, wear resistance and can provides long service time. 2. You can connect with adapter-rings to convert into lens in other diameter. 3. With this prism, you can get some interesting effects while taking a photo. 4. Also a new way to observe the world, you can see a novel scenery, night scenes, and etc.. 5. Comes with one carrying bag, for easy storage and easy carrying around with you. 6. Suitable for 77mm camera front cover. Specification: This is a kind of quality linear prism, which is made of quality optical and hardware, wear resistance and can provides long service time. Or you can connect with adapter-rings to convert into lens in other diameter. With this prism, you can get some interesting effects while taking a photo. You can have a try. Features: Made of quality optical and hardware, wear resistance and can provides long service time. You can connect with adapter-rings to convert into lens in other diameter. With this prism, you can get some interesting effects while taking a photo. Also a new way to observe the world, you can see a novel scenery, night scenes, and etc.. Comes with one carrying bag, for easy storage and easy carrying around with you. Suitable for 77mm camera front cover. Specifications: Name: Linear Prism Material: optical +hardware Len inner diameter: 72mm / 2.83in Item size: 81 * 81 * 15mm / 3.19 * 3.19 * 0.59in Carrying bag size: 125 * 120 * 25mm / 4.92 * 4.72 * 0.98in Item size: 155g / 5.47ounce Package size: 137 * 136 * 35mm / 5.39 * 5.35 * 1.38in Package weight: 242g / 8.54ounce Packing List: 1 * Linear Prism 1 * Carrying Bag 1 * Cloth Package List: 1 * Linear Prism 1 * Carrying Bag 1 * Cloth