Description: 100 percent brand new and high quality. Feature: Made of high-quality aluminium material. durable. firm and stable for us to use and has a long service life. C mount to CS mount lens adapter converter ring. Enables C lens to be used on CS mount camera. A 5mm Adapter Ring attaches between lens and camera and converts a C-Mount Lens for use on a CS-Mount Camera. If you have CS mount on your camera and you have lens with C mount. you need the adapter to put between lens and camera. Macro rings for C Mount CCTV lens. Increase the distance between lens and camera sensor. lets you to shoot closer to the object. Many of today's cameras can accept either type of lens. but it is important to be sure that the camera and lens are compatible and set up properly. C-CS Mount Adapter Ring only. other accessories demo in the picture is not included Specifications: Item Type: C-CS Mount Adapter Ring Material: Aluminum Alloy Outer Diameter: 30mm/1.18in Color: Black Quantity: 1 Pc Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm 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. Thank you Package Includes: 1 x C-CS Mount Adapter Ring