Welcome to our store! Note: Please pay attention to the size of this thread extender. It may not fit all cameras. Get a longer thread extender if it's not suitable for your application. Features: *M12 thread interface extender. *Extends the M12 interface for CCTV lenses. *A 10mm adapter ring is attached between a lens and a short camera. *If you have a lens on your camera that is too far away to make the image clear, you need the adapter to place between the lens and the camera. *Easy installation and convenient to use. Specifications: Color: Black Material: Zinc Alloy Item Size (Each): Approx. 14*10mm (D*H) Package Information: Package Size: Approx. 9 * 6 * 3cm / 3.5 * 2.4 * 1.2in Package Weight: Approx. 5g / 0.2oz Package List: 5 * M12 Thread Extenders Your satisfaction is our top priority. We will provide you with the best service. If you encounter any issues after receiving the product, such as damage or incorrect quantity, please contact us immediately, and we will offer the best solution!